Finding the Fourth Proportional to 3,638.15, 5,019.96 and 2,146.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.15 : 5,019.96 = 2,146.53 : x
2. Step 2: Convert to fraction form
   3,638.15/5,019.96 = 2,146.53/x
3. Step 3: Cross multiply
   3,638.15x = 5,019.96 × 2,146.53
4. Step 4: Simplify right side
   3,638.15x = 10,775,494.74
5. Step 5: Solve for x
   x = 10,775,494.74/3,638.15
6. Step 6: Final answer
   x = 2,961.81