Finding the Fourth Proportional to 3,716.09, 5,128.16 and 2,144.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,716.09 : 5,128.16 = 2,144.15 : x
2. Step 2: Convert to fraction form
   3,716.09/5,128.16 = 2,144.15/x
3. Step 3: Cross multiply
   3,716.09x = 5,128.16 × 2,144.15
4. Step 4: Simplify right side
   3,716.09x = 10,995,507.90
5. Step 5: Solve for x
   x = 10,995,507.90/3,716.09
6. Step 6: Final answer
   x = 2,958.90