Finding the Fourth Proportional to 23,399.72, 32,291.56 and 12,789.35

Step by Step Solution

1. Step 1: Write the proportion equation
   23,399.72 : 32,291.56 = 12,789.35 : x
2. Step 2: Convert to fraction form
   23,399.72/32,291.56 = 12,789.35/x
3. Step 3: Cross multiply
   23,399.72x = 32,291.56 × 12,789.35
4. Step 4: Simplify right side
   23,399.72x = 412,988,062.89
5. Step 5: Solve for x
   x = 412,988,062.89/23,399.72
6. Step 6: Final answer
   x = 17,649.27