Finding the Fourth Proportional to 6,520.81, 9,777.03 and 4,297.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,520.81 : 9,777.03 = 4,297.05 : x
2. Step 2: Convert to fraction form
   6,520.81/9,777.03 = 4,297.05/x
3. Step 3: Cross multiply
   6,520.81x = 9,777.03 × 4,297.05
4. Step 4: Simplify right side
   6,520.81x = 42,012,423.43
5. Step 5: Solve for x
   x = 42,012,423.43/6,520.81
6. Step 6: Final answer
   x = 6,442.83