Finding the Fourth Proportional to 6,389.69, 9,585.89 and 3,617.66

Step by Step Solution

1. Step 1: Write the proportion equation
   6,389.69 : 9,585.89 = 3,617.66 : x
2. Step 2: Convert to fraction form
   6,389.69/9,585.89 = 3,617.66/x
3. Step 3: Cross multiply
   6,389.69x = 9,585.89 × 3,617.66
4. Step 4: Simplify right side
   6,389.69x = 34,678,530.61
5. Step 5: Solve for x
   x = 34,678,530.61/6,389.69
6. Step 6: Final answer
   x = 5,427.27