Finding the Fourth Proportional to 39,966.39, 55,153.30 and 22,061.39

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.39 : 55,153.30 = 22,061.39 : x
2. Step 2: Convert to fraction form
   39,966.39/55,153.30 = 22,061.39/x
3. Step 3: Cross multiply
   39,966.39x = 55,153.30 × 22,061.39
4. Step 4: Simplify right side
   39,966.39x = 1,216,758,461.09
5. Step 5: Solve for x
   x = 1,216,758,461.09/39,966.39
6. Step 6: Final answer
   x = 30,444.54