Finding the Fourth Proportional to 6,613.50, 9,913.56 and 4,150.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,613.50 : 9,913.56 = 4,150.05 : x
2. Step 2: Convert to fraction form
   6,613.50/9,913.56 = 4,150.05/x
3. Step 3: Cross multiply
   6,613.50x = 9,913.56 × 4,150.05
4. Step 4: Simplify right side
   6,613.50x = 41,141,769.68
5. Step 5: Solve for x
   x = 41,141,769.68/6,613.50
6. Step 6: Final answer
   x = 6,220.88