Finding the Fourth Proportional to 9,965.28, 13,751.28 and 5,716.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.28 : 13,751.28 = 5,716.32 : x
2. Step 2: Convert to fraction form
   9,965.28/13,751.28 = 5,716.32/x
3. Step 3: Cross multiply
   9,965.28x = 13,751.28 × 5,716.32
4. Step 4: Simplify right side
   9,965.28x = 78,606,716.89
5. Step 5: Solve for x
   x = 78,606,716.89/9,965.28
6. Step 6: Final answer
   x = 7,888.06