Finding the Fourth Proportional to 6,499.70, 8,969.58 and 3,515.53

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.70 : 8,969.58 = 3,515.53 : x
2. Step 2: Convert to fraction form
   6,499.70/8,969.58 = 3,515.53/x
3. Step 3: Cross multiply
   6,499.70x = 8,969.58 × 3,515.53
4. Step 4: Simplify right side
   6,499.70x = 31,532,805.15
5. Step 5: Solve for x
   x = 31,532,805.15/6,499.70
6. Step 6: Final answer
   x = 4,851.43