Finding the Fourth Proportional to 3,936.09, 5,431.83 and 2,365.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.09 : 5,431.83 = 2,365.10 : x
2. Step 2: Convert to fraction form
   3,936.09/5,431.83 = 2,365.10/x
3. Step 3: Cross multiply
   3,936.09x = 5,431.83 × 2,365.10
4. Step 4: Simplify right side
   3,936.09x = 12,846,805.47
5. Step 5: Solve for x
   x = 12,846,805.47/3,936.09
6. Step 6: Final answer
   x = 3,263.85