Finding the Fourth Proportional to 6,078.38, 9,120.31 and 3,481.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,078.38 : 9,120.31 = 3,481.31 : x
2. Step 2: Convert to fraction form
   6,078.38/9,120.31 = 3,481.31/x
3. Step 3: Cross multiply
   6,078.38x = 9,120.31 × 3,481.31
4. Step 4: Simplify right side
   6,078.38x = 31,750,640.50
5. Step 5: Solve for x
   x = 31,750,640.50/6,078.38
6. Step 6: Final answer
   x = 5,223.54