Finding the Fourth Proportional to 23,141.40, 31,935.18 and 12,531

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.40 : 31,935.18 = 12,531 : x
2. Step 2: Convert to fraction form
   23,141.40/31,935.18 = 12,531/x
3. Step 3: Cross multiply
   23,141.40x = 31,935.18 × 12,531
4. Step 4: Simplify right side
   23,141.40x = 400,179,740.58
5. Step 5: Solve for x
   x = 400,179,740.58/23,141.40
6. Step 6: Final answer
   x = 17,292.81