Finding the Fourth Proportional to 5,527.50, 7,628.31 and 3,105.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,527.50 : 7,628.31 = 3,105.09 : x
2. Step 2: Convert to fraction form
   5,527.50/7,628.31 = 3,105.09/x
3. Step 3: Cross multiply
   5,527.50x = 7,628.31 × 3,105.09
4. Step 4: Simplify right side
   5,527.50x = 23,686,589.10
5. Step 5: Solve for x
   x = 23,686,589.10/5,527.50
6. Step 6: Final answer
   x = 4,285.23