Finding the Fourth Proportional to 31,892.43, 47,834.91 and 8,520.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,892.43 : 47,834.91 = 8,520.69 : x
2. Step 2: Convert to fraction form
   31,892.43/47,834.91 = 8,520.69/x
3. Step 3: Cross multiply
   31,892.43x = 47,834.91 × 8,520.69
4. Step 4: Simplify right side
   31,892.43x = 407,586,439.29
5. Step 5: Solve for x
   x = 407,586,439.29/31,892.43
6. Step 6: Final answer
   x = 12,780.04