Finding the Fourth Proportional to 39,966.80, 55,151.82 and 22,061.34

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.80 : 55,151.82 = 22,061.34 : x
2. Step 2: Convert to fraction form
   39,966.80/55,151.82 = 22,061.34/x
3. Step 3: Cross multiply
   39,966.80x = 55,151.82 × 22,061.34
4. Step 4: Simplify right side
   39,966.80x = 1,216,723,052.64
5. Step 5: Solve for x
   x = 1,216,723,052.64/39,966.80
6. Step 6: Final answer
   x = 30,443.35