Finding the Fourth Proportional to 9,760.17, 14,556.78 and 8,289

Step by Step Solution

1. Step 1: Write the proportion equation
   9,760.17 : 14,556.78 = 8,289 : x
2. Step 2: Convert to fraction form
   9,760.17/14,556.78 = 8,289/x
3. Step 3: Cross multiply
   9,760.17x = 14,556.78 × 8,289
4. Step 4: Simplify right side
   9,760.17x = 120,661,149.42
5. Step 5: Solve for x
   x = 120,661,149.42/9,760.17
6. Step 6: Final answer
   x = 12,362.61