I've got a piece of software that creates an XSL-FO description from a text file and converts that into a PDF document. Each line in the text file is converted to a fo:block in FO, which sounds wrong, but I cannot change that right now. My document contains 1 to 3 pages of A4.
What I now need to do is add a graphic that is about 8cm in width below the existing text. It should be left-aligned. Next to it I want to place a block of text with a (long) description.

I've looked at a couple of documentations for FO and came up with this:
<fo:block intrusion-displace="block" margin-top="20mm">
<fo:float float="right">
<fo:block margin-left="20mm">
Bacon ipsum dolor sit amet laborum proident...
</fo:block>
</fo:float>
<fo:external-graphic src="image.png"/>
</fo:block>
This seemed to be what I wanted (after some fine-tuning of course), but unfortunately FOP does not support fo:float yet.
There also seems to be a way to create multiple columns (without a table), but I have not been able to figure out how that works. One seems to need a new page for that, but I need to use the current page if there is space available (which I do not have to care about I guess).
So my question: Is there another way to build this without using fo:float?