Finding the Fourth Proportional to 22,288.86, 30,758.51 and 12,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.86 : 30,758.51 = 12,217.72 : x
2. Step 2: Convert to fraction form
   22,288.86/30,758.51 = 12,217.72/x
3. Step 3: Cross multiply
   22,288.86x = 30,758.51 × 12,217.72
4. Step 4: Simplify right side
   22,288.86x = 375,798,862.80
5. Step 5: Solve for x
   x = 375,798,862.80/22,288.86
6. Step 6: Final answer
   x = 16,860.39