Finding the Fourth Proportional to 31,915.59, 47,895.27 and 11,139.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,915.59 : 47,895.27 = 11,139.09 : x
2. Step 2: Convert to fraction form
   31,915.59/47,895.27 = 11,139.09/x
3. Step 3: Cross multiply
   31,915.59x = 47,895.27 × 11,139.09
4. Step 4: Simplify right side
   31,915.59x = 533,509,723.10
5. Step 5: Solve for x
   x = 533,509,723.10/31,915.59
6. Step 6: Final answer
   x = 16,716.27