Finding the Fourth Proportional to 5,978.81, 8,250.65 and 3,326.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.81 : 8,250.65 = 3,326.20 : x
2. Step 2: Convert to fraction form
   5,978.81/8,250.65 = 3,326.20/x
3. Step 3: Cross multiply
   5,978.81x = 8,250.65 × 3,326.20
4. Step 4: Simplify right side
   5,978.81x = 27,443,254.15
5. Step 5: Solve for x
   x = 27,443,254.15/5,978.81
6. Step 6: Final answer
   x = 4,590.09