Finding the Fourth Proportional to 9,760.76, 13,469.88 and 5,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,760.76 : 13,469.88 = 5,284.56 : x
2. Step 2: Convert to fraction form
   9,760.76/13,469.88 = 5,284.56/x
3. Step 3: Cross multiply
   9,760.76x = 13,469.88 × 5,284.56
4. Step 4: Simplify right side
   9,760.76x = 71,182,389.05
5. Step 5: Solve for x
   x = 71,182,389.05/9,760.76
6. Step 6: Final answer
   x = 7,292.71