Finding the Fourth Proportional to 3,932.01, 5,422.61 and 3,081.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.01 : 5,422.61 = 3,081.38 : x
2. Step 2: Convert to fraction form
   3,932.01/5,422.61 = 3,081.38/x
3. Step 3: Cross multiply
   3,932.01x = 5,422.61 × 3,081.38
4. Step 4: Simplify right side
   3,932.01x = 16,709,102.59
5. Step 5: Solve for x
   x = 16,709,102.59/3,932.01
6. Step 6: Final answer
   x = 4,249.51