Finding the Fourth Proportional to 6,648.18, 9,978.39 and 3,363.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,648.18 : 9,978.39 = 3,363.57 : x
2. Step 2: Convert to fraction form
   6,648.18/9,978.39 = 3,363.57/x
3. Step 3: Cross multiply
   6,648.18x = 9,978.39 × 3,363.57
4. Step 4: Simplify right side
   6,648.18x = 33,563,013.25
5. Step 5: Solve for x
   x = 33,563,013.25/6,648.18
6. Step 6: Final answer
   x = 5,048.45