Finding the Fourth Proportional to 3,109.40, 4,668.59 and 2,958.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.40 : 4,668.59 = 2,958.83 : x
2. Step 2: Convert to fraction form
   3,109.40/4,668.59 = 2,958.83/x
3. Step 3: Cross multiply
   3,109.40x = 4,668.59 × 2,958.83
4. Step 4: Simplify right side
   3,109.40x = 13,813,561.03
5. Step 5: Solve for x
   x = 13,813,561.03/3,109.40
6. Step 6: Final answer
   x = 4,442.51