Finding the Fourth Proportional to 11,494.54, 17,238.69 and 3,172.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,494.54 : 17,238.69 = 3,172.55 : x
2. Step 2: Convert to fraction form
   11,494.54/17,238.69 = 3,172.55/x
3. Step 3: Cross multiply
   11,494.54x = 17,238.69 × 3,172.55
4. Step 4: Simplify right side
   11,494.54x = 54,690,605.96
5. Step 5: Solve for x
   x = 54,690,605.96/11,494.54
6. Step 6: Final answer
   x = 4,757.97