Finding the Fourth Proportional to 22,216.37, 30,658.46 and 12,144.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,216.37 : 30,658.46 = 12,144.78 : x
2. Step 2: Convert to fraction form
   22,216.37/30,658.46 = 12,144.78/x
3. Step 3: Cross multiply
   22,216.37x = 30,658.46 × 12,144.78
4. Step 4: Simplify right side
   22,216.37x = 372,340,191.11
5. Step 5: Solve for x
   x = 372,340,191.11/22,216.37
6. Step 6: Final answer
   x = 16,759.73