Finding the Fourth Proportional to 23,399.47, 32,291.27 and 12,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,399.47 : 32,291.27 = 12,789.10 : x
2. Step 2: Convert to fraction form
   23,399.47/32,291.27 = 12,789.10/x
3. Step 3: Cross multiply
   23,399.47x = 32,291.27 × 12,789.10
4. Step 4: Simplify right side
   23,399.47x = 412,976,281.16
5. Step 5: Solve for x
   x = 412,976,281.16/23,399.47
6. Step 6: Final answer
   x = 17,648.96