Finding the Fourth Proportional to 3,613.69, 5,394.50 and 3,343.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.69 : 5,394.50 = 3,343.15 : x
2. Step 2: Convert to fraction form
   3,613.69/5,394.50 = 3,343.15/x
3. Step 3: Cross multiply
   3,613.69x = 5,394.50 × 3,343.15
4. Step 4: Simplify right side
   3,613.69x = 18,034,622.68
5. Step 5: Solve for x
   x = 18,034,622.68/3,613.69
6. Step 6: Final answer
   x = 4,990.64