Finding the Fourth Proportional to 9,711.84, 13,402.29 and 5,520.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,711.84 : 13,402.29 = 5,520.09 : x
2. Step 2: Convert to fraction form
   9,711.84/13,402.29 = 5,520.09/x
3. Step 3: Cross multiply
   9,711.84x = 13,402.29 × 5,520.09
4. Step 4: Simplify right side
   9,711.84x = 73,981,847.01
5. Step 5: Solve for x
   x = 73,981,847.01/9,711.84
6. Step 6: Final answer
   x = 7,617.70