Finding the Fourth Proportional to 3,638.25, 5,020.55 and 2,146.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.25 : 5,020.55 = 2,146.10 : x
2. Step 2: Convert to fraction form
   3,638.25/5,020.55 = 2,146.10/x
3. Step 3: Cross multiply
   3,638.25x = 5,020.55 × 2,146.10
4. Step 4: Simplify right side
   3,638.25x = 10,774,574.57
5. Step 5: Solve for x
   x = 10,774,574.57/3,638.25
6. Step 6: Final answer
   x = 2,961.47