Finding the Fourth Proportional to 22,216.30, 30,658.39 and 12,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,216.30 : 30,658.39 = 12,144.72 : x
2. Step 2: Convert to fraction form
   22,216.30/30,658.39 = 12,144.72/x
3. Step 3: Cross multiply
   22,216.30x = 30,658.39 × 12,144.72
4. Step 4: Simplify right side
   22,216.30x = 372,337,562.20
5. Step 5: Solve for x
   x = 372,337,562.20/22,216.30
6. Step 6: Final answer
   x = 16,759.66