Finding the Fourth Proportional to 5,470.27, 7,549.62 and 3,112.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,470.27 : 7,549.62 = 3,112.78 : x
2. Step 2: Convert to fraction form
   5,470.27/7,549.62 = 3,112.78/x
3. Step 3: Cross multiply
   5,470.27x = 7,549.62 × 3,112.78
4. Step 4: Simplify right side
   5,470.27x = 23,500,306.14
5. Step 5: Solve for x
   x = 23,500,306.14/5,470.27
6. Step 6: Final answer
   x = 4,296.00