Finding the Fourth Proportional to 6,514.89, 8,990.55 and 3,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,514.89 : 8,990.55 = 3,530.72 : x
2. Step 2: Convert to fraction form
   6,514.89/8,990.55 = 3,530.72/x
3. Step 3: Cross multiply
   6,514.89x = 8,990.55 × 3,530.72
4. Step 4: Simplify right side
   6,514.89x = 31,743,114.70
5. Step 5: Solve for x
   x = 31,743,114.70/6,514.89
6. Step 6: Final answer
   x = 4,872.39