Finding the Fourth Proportional to 11,739.89, 17,609.69 and 2,855.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,739.89 : 17,609.69 = 2,855.27 : x
2. Step 2: Convert to fraction form
   11,739.89/17,609.69 = 2,855.27/x
3. Step 3: Cross multiply
   11,739.89x = 17,609.69 × 2,855.27
4. Step 4: Simplify right side
   11,739.89x = 50,280,419.57
5. Step 5: Solve for x
   x = 50,280,419.57/11,739.89
6. Step 6: Final answer
   x = 4,282.87