Finding the Fourth Proportional to 5,144.73, 7,099.71 and 2,786.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,144.73 : 7,099.71 = 2,786.87 : x
2. Step 2: Convert to fraction form
   5,144.73/7,099.71 = 2,786.87/x
3. Step 3: Cross multiply
   5,144.73x = 7,099.71 × 2,786.87
4. Step 4: Simplify right side
   5,144.73x = 19,785,933.31
5. Step 5: Solve for x
   x = 19,785,933.31/5,144.73
6. Step 6: Final answer
   x = 3,845.86