Finding the Fourth Proportional to 6,499.42, 8,969.20 and 3,515.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.42 : 8,969.20 = 3,515.25 : x
2. Step 2: Convert to fraction form
   6,499.42/8,969.20 = 3,515.25/x
3. Step 3: Cross multiply
   6,499.42x = 8,969.20 × 3,515.25
4. Step 4: Simplify right side
   6,499.42x = 31,528,971.51
5. Step 5: Solve for x
   x = 31,528,971.51/6,499.42
6. Step 6: Final answer
   x = 4,851.05