Finding the Fourth Proportional to 3,699.36, 5,105.16 and 2,105.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.36 : 5,105.16 = 2,105.94 : x
2. Step 2: Convert to fraction form
   3,699.36/5,105.16 = 2,105.94/x
3. Step 3: Cross multiply
   3,699.36x = 5,105.16 × 2,105.94
4. Step 4: Simplify right side
   3,699.36x = 10,751,160.65
5. Step 5: Solve for x
   x = 10,751,160.65/3,699.36
6. Step 6: Final answer
   x = 2,906.22