Finding the Fourth Proportional to 5,978.02, 8,249.34 and 3,391.08

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978.02 : 8,249.34 = 3,391.08 : x
2. Step 2: Convert to fraction form
   5,978.02/8,249.34 = 3,391.08/x
3. Step 3: Cross multiply
   5,978.02x = 8,249.34 × 3,391.08
4. Step 4: Simplify right side
   5,978.02x = 27,974,171.89
5. Step 5: Solve for x
   x = 27,974,171.89/5,978.02
6. Step 6: Final answer
   x = 4,679.50