Finding the Fourth Proportional to 9,965.16, 13,752.08 and 5,488.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.16 : 13,752.08 = 5,488.86 : x
2. Step 2: Convert to fraction form
   9,965.16/13,752.08 = 5,488.86/x
3. Step 3: Cross multiply
   9,965.16x = 13,752.08 × 5,488.86
4. Step 4: Simplify right side
   9,965.16x = 75,483,286.54
5. Step 5: Solve for x
   x = 75,483,286.54/9,965.16
6. Step 6: Final answer
   x = 7,574.72