Finding the Fourth Proportional to 23,153.42, 31,951.68 and 12,543.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,153.42 : 31,951.68 = 12,543.32 : x
2. Step 2: Convert to fraction form
   23,153.42/31,951.68 = 12,543.32/x
3. Step 3: Cross multiply
   23,153.42x = 31,951.68 × 12,543.32
4. Step 4: Simplify right side
   23,153.42x = 400,780,146.78
5. Step 5: Solve for x
   x = 400,780,146.78/23,153.42
6. Step 6: Final answer
   x = 17,309.76