Finding the Fourth Proportional to 23,390.02, 32,280.42 and 12,781.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,390.02 : 32,280.42 = 12,781.23 : x
2. Step 2: Convert to fraction form
   23,390.02/32,280.42 = 12,781.23/x
3. Step 3: Cross multiply
   23,390.02x = 32,280.42 × 12,781.23
4. Step 4: Simplify right side
   23,390.02x = 412,583,472.52
5. Step 5: Solve for x
   x = 412,583,472.52/23,390.02
6. Step 6: Final answer
   x = 17,639.30