Finding the Fourth Proportional to 22,288.61, 30,758.15 and 12,217.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.61 : 30,758.15 = 12,217.48 : x
2. Step 2: Convert to fraction form
   22,288.61/30,758.15 = 12,217.48/x
3. Step 3: Cross multiply
   22,288.61x = 30,758.15 × 12,217.48
4. Step 4: Simplify right side
   22,288.61x = 375,787,036.11
5. Step 5: Solve for x
   x = 375,787,036.11/22,288.61
6. Step 6: Final answer
   x = 16,860.05