Finding the Fourth Proportional to 39,966.45, 55,153.71 and 22,061.47

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.45 : 55,153.71 = 22,061.47 : x
2. Step 2: Convert to fraction form
   39,966.45/55,153.71 = 22,061.47/x
3. Step 3: Cross multiply
   39,966.45x = 55,153.71 × 22,061.47
4. Step 4: Simplify right side
   39,966.45x = 1,216,771,642.79
5. Step 5: Solve for x
   x = 1,216,771,642.79/39,966.45
6. Step 6: Final answer
   x = 30,444.83