Finding the Fourth Proportional to 4,738.71, 7,099.55 and 2,789.85

Step by Step Solution

1. Step 1: Write the proportion equation
   4,738.71 : 7,099.55 = 2,789.85 : x
2. Step 2: Convert to fraction form
   4,738.71/7,099.55 = 2,789.85/x
3. Step 3: Cross multiply
   4,738.71x = 7,099.55 × 2,789.85
4. Step 4: Simplify right side
   4,738.71x = 19,806,686.54
5. Step 5: Solve for x
   x = 19,806,686.54/4,738.71
6. Step 6: Final answer
   x = 4,179.76