Finding the Fourth Proportional to 23,301.42, 32,155.74 and 12,691.24

Step by Step Solution

1. Step 1: Write the proportion equation
   23,301.42 : 32,155.74 = 12,691.24 : x
2. Step 2: Convert to fraction form
   23,301.42/32,155.74 = 12,691.24/x
3. Step 3: Cross multiply
   23,301.42x = 32,155.74 × 12,691.24
4. Step 4: Simplify right side
   23,301.42x = 408,096,213.72
5. Step 5: Solve for x
   x = 408,096,213.72/23,301.42
6. Step 6: Final answer
   x = 17,513.79