Finding the Fourth Proportional to 23,397.68, 32,288.72 and 12,787.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,397.68 : 32,288.72 = 12,787.31 : x
2. Step 2: Convert to fraction form
   23,397.68/32,288.72 = 12,787.31/x
3. Step 3: Cross multiply
   23,397.68x = 32,288.72 × 12,787.31
4. Step 4: Simplify right side
   23,397.68x = 412,885,759.45
5. Step 5: Solve for x
   x = 412,885,759.45/23,397.68
6. Step 6: Final answer
   x = 17,646.44