Finding the Fourth Proportional to 3,634.22, 5,013.76 and 2,139.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,634.22 : 5,013.76 = 2,139.76 : x
2. Step 2: Convert to fraction form
   3,634.22/5,013.76 = 2,139.76/x
3. Step 3: Cross multiply
   3,634.22x = 5,013.76 × 2,139.76
4. Step 4: Simplify right side
   3,634.22x = 10,728,243.10
5. Step 5: Solve for x
   x = 10,728,243.10/3,634.22
6. Step 6: Final answer
   x = 2,952.01