Finding the Fourth Proportional to 3,342.56, 5,018.56 and 2,105.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,342.56 : 5,018.56 = 2,105.96 : x
2. Step 2: Convert to fraction form
   3,342.56/5,018.56 = 2,105.96/x
3. Step 3: Cross multiply
   3,342.56x = 5,018.56 × 2,105.96
4. Step 4: Simplify right side
   3,342.56x = 10,568,886.62
5. Step 5: Solve for x
   x = 10,568,886.62/3,342.56
6. Step 6: Final answer
   x = 3,161.91