Finding the Fourth Proportional to 6,673.84, 9,209.49 and 3,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,673.84 : 9,209.49 = 3,689.50 : x
2. Step 2: Convert to fraction form
   6,673.84/9,209.49 = 3,689.50/x
3. Step 3: Cross multiply
   6,673.84x = 9,209.49 × 3,689.50
4. Step 4: Simplify right side
   6,673.84x = 33,978,367.31
5. Step 5: Solve for x
   x = 33,978,367.31/6,673.84
6. Step 6: Final answer
   x = 5,091.28