Finding the Fourth Proportional to 5,732.31, 8,578.82 and 3,979.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,732.31 : 8,578.82 = 3,979.30 : x
2. Step 2: Convert to fraction form
   5,732.31/8,578.82 = 3,979.30/x
3. Step 3: Cross multiply
   5,732.31x = 8,578.82 × 3,979.30
4. Step 4: Simplify right side
   5,732.31x = 34,137,698.43
5. Step 5: Solve for x
   x = 34,137,698.43/5,732.31
6. Step 6: Final answer
   x = 5,955.31