Finding the Fourth Proportional to 6,150.78, 8,488.20 and 3,356.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,150.78 : 8,488.20 = 3,356.28 : x
2. Step 2: Convert to fraction form
   6,150.78/8,488.20 = 3,356.28/x
3. Step 3: Cross multiply
   6,150.78x = 8,488.20 × 3,356.28
4. Step 4: Simplify right side
   6,150.78x = 28,488,775.90
5. Step 5: Solve for x
   x = 28,488,775.90/6,150.78
6. Step 6: Final answer
   x = 4,631.73