Finding the Fourth Proportional to 3,910.05, 5,395.82 and 2,141.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.05 : 5,395.82 = 2,141.55 : x
2. Step 2: Convert to fraction form
   3,910.05/5,395.82 = 2,141.55/x
3. Step 3: Cross multiply
   3,910.05x = 5,395.82 × 2,141.55
4. Step 4: Simplify right side
   3,910.05x = 11,555,407.61
5. Step 5: Solve for x
   x = 11,555,407.61/3,910.05
6. Step 6: Final answer
   x = 2,955.31