Finding the Fourth Proportional to 6,499.82, 8,969.72 and 3,515.65

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.82 : 8,969.72 = 3,515.65 : x
2. Step 2: Convert to fraction form
   6,499.82/8,969.72 = 3,515.65/x
3. Step 3: Cross multiply
   6,499.82x = 8,969.72 × 3,515.65
4. Step 4: Simplify right side
   6,499.82x = 31,534,396.12
5. Step 5: Solve for x
   x = 31,534,396.12/6,499.82
6. Step 6: Final answer
   x = 4,851.58