Finding the Fourth Proportional to 23,141.72, 31,935.59 and 12,531.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,141.72 : 31,935.59 = 12,531.36 : x
2. Step 2: Convert to fraction form
   23,141.72/31,935.59 = 12,531.36/x
3. Step 3: Cross multiply
   23,141.72x = 31,935.59 × 12,531.36
4. Step 4: Simplify right side
   23,141.72x = 400,196,406.43
5. Step 5: Solve for x
   x = 400,196,406.43/23,141.72
6. Step 6: Final answer
   x = 17,293.29