Finding the Fourth Proportional to 39,983.72, 55,177.98 and 22,078.70

Step by Step Solution

1. Step 1: Write the proportion equation
   39,983.72 : 55,177.98 = 22,078.70 : x
2. Step 2: Convert to fraction form
   39,983.72/55,177.98 = 22,078.70/x
3. Step 3: Cross multiply
   39,983.72x = 55,177.98 × 22,078.70
4. Step 4: Simplify right side
   39,983.72x = 1,218,258,067.03
5. Step 5: Solve for x
   x = 1,218,258,067.03/39,983.72
6. Step 6: Final answer
   x = 30,468.85