Finding the Fourth Proportional to 4,309.20, 6,443.82 and 3,269.43

Step by Step Solution

1. Step 1: Write the proportion equation
   4,309.20 : 6,443.82 = 3,269.43 : x
2. Step 2: Convert to fraction form
   4,309.20/6,443.82 = 3,269.43/x
3. Step 3: Cross multiply
   4,309.20x = 6,443.82 × 3,269.43
4. Step 4: Simplify right side
   4,309.20x = 21,067,618.42
5. Step 5: Solve for x
   x = 21,067,618.42/4,309.20
6. Step 6: Final answer
   x = 4,888.99