Finding the Fourth Proportional to 23,391.47, 32,280.22 and 12,781.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,391.47 : 32,280.22 = 12,781.10 : x
2. Step 2: Convert to fraction form
   23,391.47/32,280.22 = 12,781.10/x
3. Step 3: Cross multiply
   23,391.47x = 32,280.22 × 12,781.10
4. Step 4: Simplify right side
   23,391.47x = 412,576,671.09
5. Step 5: Solve for x
   x = 412,576,671.09/23,391.47
6. Step 6: Final answer
   x = 17,637.91