Finding the Fourth Proportional to 23,400.06, 32,291.46 and 12,789.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,400.06 : 32,291.46 = 12,789.78 : x
2. Step 2: Convert to fraction form
   23,400.06/32,291.46 = 12,789.78/x
3. Step 3: Cross multiply
   23,400.06x = 32,291.46 × 12,789.78
4. Step 4: Simplify right side
   23,400.06x = 413,000,669.28
5. Step 5: Solve for x
   x = 413,000,669.28/23,400.06
6. Step 6: Final answer
   x = 17,649.56