Finding the Fourth Proportional to 5,754.78, 8,620.56 and 3,530.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,754.78 : 8,620.56 = 3,530.79 : x
2. Step 2: Convert to fraction form
   5,754.78/8,620.56 = 3,530.79/x
3. Step 3: Cross multiply
   5,754.78x = 8,620.56 × 3,530.79
4. Step 4: Simplify right side
   5,754.78x = 30,437,387.04
5. Step 5: Solve for x
   x = 30,437,387.04/5,754.78
6. Step 6: Final answer
   x = 5,289.06