Finding the Fourth Proportional to 3,826.10, 5,280.27 and 2,147.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.10 : 5,280.27 = 2,147.62 : x
2. Step 2: Convert to fraction form
   3,826.10/5,280.27 = 2,147.62/x
3. Step 3: Cross multiply
   3,826.10x = 5,280.27 × 2,147.62
4. Step 4: Simplify right side
   3,826.10x = 11,340,013.46
5. Step 5: Solve for x
   x = 11,340,013.46/3,826.10
6. Step 6: Final answer
   x = 2,963.86