Finding the Fourth Proportional to 6,287.88, 8,676.61 and 3,636.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,287.88 : 8,676.61 = 3,636.15 : x
2. Step 2: Convert to fraction form
   6,287.88/8,676.61 = 3,636.15/x
3. Step 3: Cross multiply
   6,287.88x = 8,676.61 × 3,636.15
4. Step 4: Simplify right side
   6,287.88x = 31,549,455.45
5. Step 5: Solve for x
   x = 31,549,455.45/6,287.88
6. Step 6: Final answer
   x = 5,017.50