Finding the Fourth Proportional to 3,631.37, 5,010.98 and 2,139.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,631.37 : 5,010.98 = 2,139.05 : x
2. Step 2: Convert to fraction form
   3,631.37/5,010.98 = 2,139.05/x
3. Step 3: Cross multiply
   3,631.37x = 5,010.98 × 2,139.05
4. Step 4: Simplify right side
   3,631.37x = 10,718,701.02
5. Step 5: Solve for x
   x = 10,718,701.02/3,631.37
6. Step 6: Final answer
   x = 2,951.70