Finding the Fourth Proportional to 23,141.86, 31,935.98 and 12,531.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.86 : 31,935.98 = 12,531.72 : x
2. Step 2: Convert to fraction form
   23,141.86/31,935.98 = 12,531.72/x
3. Step 3: Cross multiply
   23,141.86x = 31,935.98 × 12,531.72
4. Step 4: Simplify right side
   23,141.86x = 400,212,759.29
5. Step 5: Solve for x
   x = 400,212,759.29/23,141.86
6. Step 6: Final answer
   x = 17,293.89