Finding the Fourth Proportional to 9,691.76, 13,375.32 and 5,500.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,691.76 : 13,375.32 = 5,500.28 : x
2. Step 2: Convert to fraction form
   9,691.76/13,375.32 = 5,500.28/x
3. Step 3: Cross multiply
   9,691.76x = 13,375.32 × 5,500.28
4. Step 4: Simplify right side
   9,691.76x = 73,568,005.09
5. Step 5: Solve for x
   x = 73,568,005.09/9,691.76
6. Step 6: Final answer
   x = 7,590.78