Finding the Fourth Proportional to 39,960.52, 55,145.90 and 22,055.15

Step by Step Solution

1. Step 1: Write the proportion equation
   39,960.52 : 55,145.90 = 22,055.15 : x
2. Step 2: Convert to fraction form
   39,960.52/55,145.90 = 22,055.15/x
3. Step 3: Cross multiply
   39,960.52x = 55,145.90 × 22,055.15
4. Step 4: Simplify right side
   39,960.52x = 1,216,251,289.39
5. Step 5: Solve for x
   x = 1,216,251,289.39/39,960.52
6. Step 6: Final answer
   x = 30,436.32