Finding the Fourth Proportional to 22,221.12, 30,665.32 and 12,149.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,221.12 : 30,665.32 = 12,149.76 : x
2. Step 2: Convert to fraction form
   22,221.12/30,665.32 = 12,149.76/x
3. Step 3: Cross multiply
   22,221.12x = 30,665.32 × 12,149.76
4. Step 4: Simplify right side
   22,221.12x = 372,576,278.32
5. Step 5: Solve for x
   x = 372,576,278.32/22,221.12
6. Step 6: Final answer
   x = 16,766.76