Finding the Fourth Proportional to 22,424.50, 30,945.81 and 12,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,424.50 : 30,945.81 = 12,488.50 : x
2. Step 2: Convert to fraction form
   22,424.50/30,945.81 = 12,488.50/x
3. Step 3: Cross multiply
   22,424.50x = 30,945.81 × 12,488.50
4. Step 4: Simplify right side
   22,424.50x = 386,466,748.19
5. Step 5: Solve for x
   x = 386,466,748.19/22,424.50
6. Step 6: Final answer
   x = 17,234.13