Finding the Fourth Proportional to 6,499.40, 8,969.16 and 3,515.23

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.40 : 8,969.16 = 3,515.23 : x
2. Step 2: Convert to fraction form
   6,499.40/8,969.16 = 3,515.23/x
3. Step 3: Cross multiply
   6,499.40x = 8,969.16 × 3,515.23
4. Step 4: Simplify right side
   6,499.40x = 31,528,684.70
5. Step 5: Solve for x
   x = 31,528,684.70/6,499.40
6. Step 6: Final answer
   x = 4,851.02