Finding the Fourth Proportional to 9,768.72, 13,480.79 and 5,576.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,768.72 : 13,480.79 = 5,576.97 : x
2. Step 2: Convert to fraction form
   9,768.72/13,480.79 = 5,576.97/x
3. Step 3: Cross multiply
   9,768.72x = 13,480.79 × 5,576.97
4. Step 4: Simplify right side
   9,768.72x = 75,181,933.52
5. Step 5: Solve for x
   x = 75,181,933.52/9,768.72
6. Step 6: Final answer
   x = 7,696.19