Finding the Fourth Proportional to 23,098.87, 31,876.43 and 12,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,098.87 : 31,876.43 = 12,488.50 : x
2. Step 2: Convert to fraction form
   23,098.87/31,876.43 = 12,488.50/x
3. Step 3: Cross multiply
   23,098.87x = 31,876.43 × 12,488.50
4. Step 4: Simplify right side
   23,098.87x = 398,088,796.06
5. Step 5: Solve for x
   x = 398,088,796.06/23,098.87
6. Step 6: Final answer
   x = 17,234.12