Finding the Fourth Proportional to 23,168.50, 31,972.35 and 12,557.86

Step by Step Solution

1. Step 1: Write the proportion equation
   23,168.50 : 31,972.35 = 12,557.86 : x
2. Step 2: Convert to fraction form
   23,168.50/31,972.35 = 12,557.86/x
3. Step 3: Cross multiply
   23,168.50x = 31,972.35 × 12,557.86
4. Step 4: Simplify right side
   23,168.50x = 401,504,295.17
5. Step 5: Solve for x
   x = 401,504,295.17/23,168.50
6. Step 6: Final answer
   x = 17,329.75