Finding the Fourth Proportional to 5,142.80, 7,097.00 and 2,784.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.80 : 7,097.00 = 2,784.92 : x
2. Step 2: Convert to fraction form
   5,142.80/7,097.00 = 2,784.92/x
3. Step 3: Cross multiply
   5,142.80x = 7,097.00 × 2,784.92
4. Step 4: Simplify right side
   5,142.80x = 19,764,527.83
5. Step 5: Solve for x
   x = 19,764,527.83/5,142.80
6. Step 6: Final answer
   x = 3,843.15