Finding the Fourth Proportional to 22,216.42, 30,658.86 and 12,144.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,216.42 : 30,658.86 = 12,144.68 : x
2. Step 2: Convert to fraction form
   22,216.42/30,658.86 = 12,144.68/x
3. Step 3: Cross multiply
   22,216.42x = 30,658.86 × 12,144.68
4. Step 4: Simplify right side
   22,216.42x = 372,341,890.57
5. Step 5: Solve for x
   x = 372,341,890.57/22,216.42
6. Step 6: Final answer
   x = 16,759.76