Finding the Fourth Proportional to 23,156.91, 31,957.20 and 13,084.75

Step by Step Solution

1. Step 1: Write the proportion equation
   23,156.91 : 31,957.20 = 13,084.75 : x
2. Step 2: Convert to fraction form
   23,156.91/31,957.20 = 13,084.75/x
3. Step 3: Cross multiply
   23,156.91x = 31,957.20 × 13,084.75
4. Step 4: Simplify right side
   23,156.91x = 418,152,002.39
5. Step 5: Solve for x
   x = 418,152,002.39/23,156.91
6. Step 6: Final answer
   x = 18,057.33