Finding the Fourth Proportional to 5,144.57, 7,099.54 and 2,786.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,144.57 : 7,099.54 = 2,786.72 : x
2. Step 2: Convert to fraction form
   5,144.57/7,099.54 = 2,786.72/x
3. Step 3: Cross multiply
   5,144.57x = 7,099.54 × 2,786.72
4. Step 4: Simplify right side
   5,144.57x = 19,784,440.89
5. Step 5: Solve for x
   x = 19,784,440.89/5,144.57
6. Step 6: Final answer
   x = 3,845.70