Finding the Fourth Proportional to 39,966.37, 55,153.60 and 22,061.39

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.37 : 55,153.60 = 22,061.39 : x
2. Step 2: Convert to fraction form
   39,966.37/55,153.60 = 22,061.39/x
3. Step 3: Cross multiply
   39,966.37x = 55,153.60 × 22,061.39
4. Step 4: Simplify right side
   39,966.37x = 1,216,764,748.58
5. Step 5: Solve for x
   x = 1,216,764,748.58/39,966.37
6. Step 6: Final answer
   x = 30,444.72