Finding the Fourth Proportional to 23,301.78, 32,156.46 and 12,691.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,301.78 : 32,156.46 = 12,691.32 : x
2. Step 2: Convert to fraction form
   23,301.78/32,156.46 = 12,691.32/x
3. Step 3: Cross multiply
   23,301.78x = 32,156.46 × 12,691.32
4. Step 4: Simplify right side
   23,301.78x = 408,107,923.93
5. Step 5: Solve for x
   x = 408,107,923.93/23,301.78
6. Step 6: Final answer
   x = 17,514.02