Finding the Fourth Proportional to 23,099.13, 31,876.83 and 12,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   23,099.13 : 31,876.83 = 12,488.76 : x
2. Step 2: Convert to fraction form
   23,099.13/31,876.83 = 12,488.76/x
3. Step 3: Cross multiply
   23,099.13x = 31,876.83 × 12,488.76
4. Step 4: Simplify right side
   23,099.13x = 398,102,079.43
5. Step 5: Solve for x
   x = 398,102,079.43/23,099.13
6. Step 6: Final answer
   x = 17,234.51