Finding the Fourth Proportional to 6,550.75, 9,039.94 and 3,898.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,550.75 : 9,039.94 = 3,898.09 : x
2. Step 2: Convert to fraction form
   6,550.75/9,039.94 = 3,898.09/x
3. Step 3: Cross multiply
   6,550.75x = 9,039.94 × 3,898.09
4. Step 4: Simplify right side
   6,550.75x = 35,238,499.71
5. Step 5: Solve for x
   x = 35,238,499.71/6,550.75
6. Step 6: Final answer
   x = 5,379.31