Finding the Fourth Proportional to 23,085.38, 31,857.83 and 13,149.38

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.38 : 31,857.83 = 13,149.38 : x
2. Step 2: Convert to fraction form
   23,085.38/31,857.83 = 13,149.38/x
3. Step 3: Cross multiply
   23,085.38x = 31,857.83 × 13,149.38
4. Step 4: Simplify right side
   23,085.38x = 418,910,487.61
5. Step 5: Solve for x
   x = 418,910,487.61/23,085.38
6. Step 6: Final answer
   x = 18,146.14