Finding the Fourth Proportional to 6,520.81, 8,998.72 and 3,536.64

Step by Step Solution

1. Step 1: Write the proportion equation
   6,520.81 : 8,998.72 = 3,536.64 : x
2. Step 2: Convert to fraction form
   6,520.81/8,998.72 = 3,536.64/x
3. Step 3: Cross multiply
   6,520.81x = 8,998.72 × 3,536.64
4. Step 4: Simplify right side
   6,520.81x = 31,825,233.10
5. Step 5: Solve for x
   x = 31,825,233.10/6,520.81
6. Step 6: Final answer
   x = 4,880.56