Finding the Fourth Proportional to 22,217.50, 30,660.15 and 12,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,217.50 : 30,660.15 = 12,281.50 : x
2. Step 2: Convert to fraction form
   22,217.50/30,660.15 = 12,281.50/x
3. Step 3: Cross multiply
   22,217.50x = 30,660.15 × 12,281.50
4. Step 4: Simplify right side
   22,217.50x = 376,552,632.23
5. Step 5: Solve for x
   x = 376,552,632.23/22,217.50
6. Step 6: Final answer
   x = 16,948.47