Finding the Fourth Proportional to 23,142.34, 31,936.46 and 12,531.99

Step by Step Solution

1. Step 1: Write the proportion equation
   23,142.34 : 31,936.46 = 12,531.99 : x
2. Step 2: Convert to fraction form
   23,142.34/31,936.46 = 12,531.99/x
3. Step 3: Cross multiply
   23,142.34x = 31,936.46 × 12,531.99
4. Step 4: Simplify right side
   23,142.34x = 400,227,397.36
5. Step 5: Solve for x
   x = 400,227,397.36/23,142.34
6. Step 6: Final answer
   x = 17,294.16