Finding the Fourth Proportional to 5,080.78, 7,011.06 and 2,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,080.78 : 7,011.06 = 2,842.72 : x
2. Step 2: Convert to fraction form
   5,080.78/7,011.06 = 2,842.72/x
3. Step 3: Cross multiply
   5,080.78x = 7,011.06 × 2,842.72
4. Step 4: Simplify right side
   5,080.78x = 19,930,480.48
5. Step 5: Solve for x
   x = 19,930,480.48/5,080.78
6. Step 6: Final answer
   x = 3,922.72