Finding the Fourth Proportional to 3,636.01, 5,015.68 and 2,143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,636.01 : 5,015.68 = 2,143.72 : x
2. Step 2: Convert to fraction form
   3,636.01/5,015.68 = 2,143.72/x
3. Step 3: Cross multiply
   3,636.01x = 5,015.68 × 2,143.72
4. Step 4: Simplify right side
   3,636.01x = 10,752,213.53
5. Step 5: Solve for x
   x = 10,752,213.53/3,636.01
6. Step 6: Final answer
   x = 2,957.15