Finding the Fourth Proportional to 6,520.09, 8,997.72 and 3,535.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,520.09 : 8,997.72 = 3,535.91 : x
2. Step 2: Convert to fraction form
   6,520.09/8,997.72 = 3,535.91/x
3. Step 3: Cross multiply
   6,520.09x = 8,997.72 × 3,535.91
4. Step 4: Simplify right side
   6,520.09x = 31,815,105.88
5. Step 5: Solve for x
   x = 31,815,105.88/6,520.09
6. Step 6: Final answer
   x = 4,879.55