Finding the Fourth Proportional to 23,099.18, 31,876.88 and 12,488.85

Step by Step Solution

1. Step 1: Write the proportion equation
   23,099.18 : 31,876.88 = 12,488.85 : x
2. Step 2: Convert to fraction form
   23,099.18/31,876.88 = 12,488.85/x
3. Step 3: Cross multiply
   23,099.18x = 31,876.88 × 12,488.85
4. Step 4: Simplify right side
   23,099.18x = 398,105,510.34
5. Step 5: Solve for x
   x = 398,105,510.34/23,099.18
6. Step 6: Final answer
   x = 17,234.62