Finding the Fourth Proportional to 22,221.50, 30,665.60 and 12,149.93

Step by Step Solution

1. Step 1: Write the proportion equation
   22,221.50 : 30,665.60 = 12,149.93 : x
2. Step 2: Convert to fraction form
   22,221.50/30,665.60 = 12,149.93/x
3. Step 3: Cross multiply
   22,221.50x = 30,665.60 × 12,149.93
4. Step 4: Simplify right side
   22,221.50x = 372,584,679.33
5. Step 5: Solve for x
   x = 372,584,679.33/22,221.50
6. Step 6: Final answer
   x = 16,766.86