Finding the Fourth Proportional to 22,139.42, 30,552 and 12,707.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,139.42 : 30,552 = 12,707.24 : x
2. Step 2: Convert to fraction form
   22,139.42/30,552 = 12,707.24/x
3. Step 3: Cross multiply
   22,139.42x = 30,552 × 12,707.24
4. Step 4: Simplify right side
   22,139.42x = 388,231,596.48
5. Step 5: Solve for x
   x = 388,231,596.48/22,139.42
6. Step 6: Final answer
   x = 17,535.76