Finding the Fourth Proportional to 9,747.78, 13,451.94 and 5,271.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,747.78 : 13,451.94 = 5,271.54 : x
2. Step 2: Convert to fraction form
   9,747.78/13,451.94 = 5,271.54/x
3. Step 3: Cross multiply
   9,747.78x = 13,451.94 × 5,271.54
4. Step 4: Simplify right side
   9,747.78x = 70,912,439.79
5. Step 5: Solve for x
   x = 70,912,439.79/9,747.78
6. Step 6: Final answer
   x = 7,274.73