Finding the Fourth Proportional to 12,766.88, 17,612.88 and 7,796

Step by Step Solution

1. Step 1: Write the proportion equation
   12,766.88 : 17,612.88 = 7,796 : x
2. Step 2: Convert to fraction form
   12,766.88/17,612.88 = 7,796/x
3. Step 3: Cross multiply
   12,766.88x = 17,612.88 × 7,796
4. Step 4: Simplify right side
   12,766.88x = 137,310,012.48
5. Step 5: Solve for x
   x = 137,310,012.48/12,766.88
6. Step 6: Final answer
   x = 10,755.17