Finding the Fourth Proportional to 6,367.78, 8,787.57 and 3,535.19

Step by Step Solution

1. Step 1: Write the proportion equation
   6,367.78 : 8,787.57 = 3,535.19 : x
2. Step 2: Convert to fraction form
   6,367.78/8,787.57 = 3,535.19/x
3. Step 3: Cross multiply
   6,367.78x = 8,787.57 × 3,535.19
4. Step 4: Simplify right side
   6,367.78x = 31,065,729.59
5. Step 5: Solve for x
   x = 31,065,729.59/6,367.78
6. Step 6: Final answer
   x = 4,878.58