Finding the Fourth Proportional to 6,643.50, 9,168.05 and 3,659.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,643.50 : 9,168.05 = 3,659.34 : x
2. Step 2: Convert to fraction form
   6,643.50/9,168.05 = 3,659.34/x
3. Step 3: Cross multiply
   6,643.50x = 9,168.05 × 3,659.34
4. Step 4: Simplify right side
   6,643.50x = 33,548,993.79
5. Step 5: Solve for x
   x = 33,548,993.79/6,643.50
6. Step 6: Final answer
   x = 5,049.90