Finding the Fourth Proportional to 39,966.38, 55,154.06 and 22,061.40

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.38 : 55,154.06 = 22,061.40 : x
2. Step 2: Convert to fraction form
   39,966.38/55,154.06 = 22,061.40/x
3. Step 3: Cross multiply
   39,966.38x = 55,154.06 × 22,061.40
4. Step 4: Simplify right side
   39,966.38x = 1,216,775,627.61
5. Step 5: Solve for x
   x = 1,216,775,627.61/39,966.38
6. Step 6: Final answer
   x = 30,444.98