Finding the Fourth Proportional to 5,854.20, 8,079.54 and 3,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,854.20 : 8,079.54 = 3,839.31 : x
2. Step 2: Convert to fraction form
   5,854.20/8,079.54 = 3,839.31/x
3. Step 3: Cross multiply
   5,854.20x = 8,079.54 × 3,839.31
4. Step 4: Simplify right side
   5,854.20x = 31,019,844.32
5. Step 5: Solve for x
   x = 31,019,844.32/5,854.20
6. Step 6: Final answer
   x = 5,298.73