if you think about it, lololhaha303, you can't pinpoint where the '10th' balloon is, since everyone can have a different one. But i see what you mean, you can't find one of the balloons. I'm sure google will be nice to you.
I wrote a guide and it tells you all of the locations for the balloons! Here it is: http://armorgames.com/community/thread/7195031/elephant-quest-balloon-guide : Thats its URL! :3