Finding the Fourth Proportional to 3,724.82, 5,139.16 and 2,309.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,724.82 : 5,139.16 = 2,309.56 : x
2. Step 2: Convert to fraction form
   3,724.82/5,139.16 = 2,309.56/x
3. Step 3: Cross multiply
   3,724.82x = 5,139.16 × 2,309.56
4. Step 4: Simplify right side
   3,724.82x = 11,869,198.37
5. Step 5: Solve for x
   x = 11,869,198.37/3,724.82
6. Step 6: Final answer
   x = 3,186.52