Finding the Fourth Proportional to 10,689.76, 14,755.98 and 9,568.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,689.76 : 14,755.98 = 9,568.72 : x
2. Step 2: Convert to fraction form
   10,689.76/14,755.98 = 9,568.72/x
3. Step 3: Cross multiply
   10,689.76x = 14,755.98 × 9,568.72
4. Step 4: Simplify right side
   10,689.76x = 141,195,840.95
5. Step 5: Solve for x
   x = 141,195,840.95/10,689.76
6. Step 6: Final answer
   x = 13,208.51