Finding the Fourth Proportional to 39,983.31, 55,176.96 and 22,078.35

Step by Step Solution

1. Step 1: Write the proportion equation
   39,983.31 : 55,176.96 = 22,078.35 : x
2. Step 2: Convert to fraction form
   39,983.31/55,176.96 = 22,078.35/x
3. Step 3: Cross multiply
   39,983.31x = 55,176.96 × 22,078.35
4. Step 4: Simplify right side
   39,983.31x = 1,218,216,234.82
5. Step 5: Solve for x
   x = 1,218,216,234.82/39,983.31
6. Step 6: Final answer
   x = 30,468.12