Finding the Fourth Proportional to 9,689.34, 14,520.12 and 5,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,689.34 : 14,520.12 = 5,520.72 : x
2. Step 2: Convert to fraction form
   9,689.34/14,520.12 = 5,520.72/x
3. Step 3: Cross multiply
   9,689.34x = 14,520.12 × 5,520.72
4. Step 4: Simplify right side
   9,689.34x = 80,161,516.89
5. Step 5: Solve for x
   x = 80,161,516.89/9,689.34
6. Step 6: Final answer
   x = 8,273.17