Finding the Fourth Proportional to 4,077.36, 5,629.25 and 3,131.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,077.36 : 5,629.25 = 3,131.31 : x
2. Step 2: Convert to fraction form
   4,077.36/5,629.25 = 3,131.31/x
3. Step 3: Cross multiply
   4,077.36x = 5,629.25 × 3,131.31
4. Step 4: Simplify right side
   4,077.36x = 17,626,926.82
5. Step 5: Solve for x
   x = 17,626,926.82/4,077.36
6. Step 6: Final answer
   x = 4,323.12