Finding the Fourth Proportional to 6,454.82, 8,907.62 and 3,936.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,454.82 : 8,907.62 = 3,936.78 : x
2. Step 2: Convert to fraction form
   6,454.82/8,907.62 = 3,936.78/x
3. Step 3: Cross multiply
   6,454.82x = 8,907.62 × 3,936.78
4. Step 4: Simplify right side
   6,454.82x = 35,067,320.58
5. Step 5: Solve for x
   x = 35,067,320.58/6,454.82
6. Step 6: Final answer
   x = 5,432.74