Finding the Fourth Proportional to 3,936.88, 5,906.94 and 2,205.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.88 : 5,906.94 = 2,205.46 : x
2. Step 2: Convert to fraction form
   3,936.88/5,906.94 = 2,205.46/x
3. Step 3: Cross multiply
   3,936.88x = 5,906.94 × 2,205.46
4. Step 4: Simplify right side
   3,936.88x = 13,027,519.89
5. Step 5: Solve for x
   x = 13,027,519.89/3,936.88
6. Step 6: Final answer
   x = 3,309.10