Outside World -> Apache nginx (serving django)

Outside World -> Apache nginx (serving django)

I have a django application configured with nginx which is working fine.
Now to speak to the outside world our institute already have a apache
based webserver (as a student we do not have access to the apache config
file).
Now my problem is: How to modify the html files and nginx configuration,
so that the request can be received by my system with ip(xx.xx.xx.xx) and
send the results back to apache(with ip yy.yy.yy.yy), so that anyone from
outside the intranet (outside world) can access the application.