Finding the Fourth Proportional to 3,715.84, 5,127.78 and 2,143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.84 : 5,127.78 = 2,143.72 : x
2. Step 2: Convert to fraction form
   3,715.84/5,127.78 = 2,143.72/x
3. Step 3: Cross multiply
   3,715.84x = 5,127.78 × 2,143.72
4. Step 4: Simplify right side
   3,715.84x = 10,992,524.54
5. Step 5: Solve for x
   x = 10,992,524.54/3,715.84
6. Step 6: Final answer
   x = 2,958.29