Finding the Fourth Proportional to 5,099.12, 7,648.72 and 2,789.36

Step by Step Solution

1. Step 1: Write the proportion equation
   5,099.12 : 7,648.72 = 2,789.36 : x
2. Step 2: Convert to fraction form
   5,099.12/7,648.72 = 2,789.36/x
3. Step 3: Cross multiply
   5,099.12x = 7,648.72 × 2,789.36
4. Step 4: Simplify right side
   5,099.12x = 21,335,033.62
5. Step 5: Solve for x
   x = 21,335,033.62/5,099.12
6. Step 6: Final answer
   x = 4,184.06