Finding the Fourth Proportional to 5,142.72, 7,096.97 and 2,784.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.72 : 7,096.97 = 2,784.87 : x
2. Step 2: Convert to fraction form
   5,142.72/7,096.97 = 2,784.87/x
3. Step 3: Cross multiply
   5,142.72x = 7,096.97 × 2,784.87
4. Step 4: Simplify right side
   5,142.72x = 19,764,124.92
5. Step 5: Solve for x
   x = 19,764,124.92/5,142.72
6. Step 6: Final answer
   x = 3,843.13