Finding the Fourth Proportional to 23,142.06, 31,936.04 and 12,531.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,142.06 : 31,936.04 = 12,531.69 : x
2. Step 2: Convert to fraction form
   23,142.06/31,936.04 = 12,531.69/x
3. Step 3: Cross multiply
   23,142.06x = 31,936.04 × 12,531.69
4. Step 4: Simplify right side
   23,142.06x = 400,212,490.45
5. Step 5: Solve for x
   x = 400,212,490.45/23,142.06
6. Step 6: Final answer
   x = 17,293.73