Finding the Fourth Proportional to 23,142.24, 31,936.32 and 12,531.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,142.24 : 31,936.32 = 12,531.96 : x
2. Step 2: Convert to fraction form
   23,142.24/31,936.32 = 12,531.96/x
3. Step 3: Cross multiply
   23,142.24x = 31,936.32 × 12,531.96
4. Step 4: Simplify right side
   23,142.24x = 400,224,684.79
5. Step 5: Solve for x
   x = 400,224,684.79/23,142.24
6. Step 6: Final answer
   x = 17,294.12