Finding the Fourth Proportional to 22,149.60, 30,504.24 and 21,665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,149.60 : 30,504.24 = 21,665.76 : x
2. Step 2: Convert to fraction form
   22,149.60/30,504.24 = 21,665.76/x
3. Step 3: Cross multiply
   22,149.60x = 30,504.24 × 21,665.76
4. Step 4: Simplify right side
   22,149.60x = 660,897,542.82
5. Step 5: Solve for x
   x = 660,897,542.82/22,149.60
6. Step 6: Final answer
   x = 29,837.90