Finding the Fourth Proportional to 23,172.92, 31,978.66 and 12,562.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,172.92 : 31,978.66 = 12,562.62 : x
2. Step 2: Convert to fraction form
   23,172.92/31,978.66 = 12,562.62/x
3. Step 3: Cross multiply
   23,172.92x = 31,978.66 × 12,562.62
4. Step 4: Simplify right side
   23,172.92x = 401,735,753.69
5. Step 5: Solve for x
   x = 401,735,753.69/23,172.92
6. Step 6: Final answer
   x = 17,336.43