Finding the Fourth Proportional to 4,424.07, 6,105.78 and 2,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,424.07 : 6,105.78 = 2,856.72 : x
2. Step 2: Convert to fraction form
   4,424.07/6,105.78 = 2,856.72/x
3. Step 3: Cross multiply
   4,424.07x = 6,105.78 × 2,856.72
4. Step 4: Simplify right side
   4,424.07x = 17,442,503.84
5. Step 5: Solve for x
   x = 17,442,503.84/4,424.07
6. Step 6: Final answer
   x = 3,942.64