Finding the Fourth Proportional to 23,105.92, 31,886.17 and 12,495.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,105.92 : 31,886.17 = 12,495.55 : x
2. Step 2: Convert to fraction form
   23,105.92/31,886.17 = 12,495.55/x
3. Step 3: Cross multiply
   23,105.92x = 31,886.17 × 12,495.55
4. Step 4: Simplify right side
   23,105.92x = 398,435,231.54
5. Step 5: Solve for x
   x = 398,435,231.54/23,105.92
6. Step 6: Final answer
   x = 17,243.86