First off, I dont think you need those current limiting resistors between the 7 seg and 7447, It has internal current limiting.
For the 3 remaining pins, I'm assuming that your 7 seg display has 10 leads total: 7 for the display (a,b,c,d,e,f,g) then you have 2 commons, (are they common annode?) and the final lead is for the decimal.
Usually the 2 commons are in the middle of the top and bottom.
It looks like the 7447 should be able to support common annodes. Just connect the 2 commons to your +5 volts.
looking at your drawing, You also need to connect pin 8 of the 7447 to ground.
Looking at the truth table for the 7447, you want pin 3 (Lamp test) high, if you bring this low, it should light every segment of your display, a good way to check it. You also want your blanking input (pin 4) high. and I think you will want pin 5 high as well.
Hope this isnt confusing, Feel free to send me an IM if you have any questions.