Finding the Fourth Proportional to 39,963.72, 55,146.00 and 22,057.57

Step by Step Solution

1. Step 1: Write the proportion equation
   39,963.72 : 55,146.00 = 22,057.57 : x
2. Step 2: Convert to fraction form
   39,963.72/55,146.00 = 22,057.57/x
3. Step 3: Cross multiply
   39,963.72x = 55,146.00 × 22,057.57
4. Step 4: Simplify right side
   39,963.72x = 1,216,386,369.20
5. Step 5: Solve for x
   x = 1,216,386,369.20/39,963.72
6. Step 6: Final answer
   x = 30,437.27