Finding the Fourth Proportional to 9,965.43, 13,751.64 and 5,488.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.43 : 13,751.64 = 5,488.83 : x
2. Step 2: Convert to fraction form
   9,965.43/13,751.64 = 5,488.83/x
3. Step 3: Cross multiply
   9,965.43x = 13,751.64 × 5,488.83
4. Step 4: Simplify right side
   9,965.43x = 75,480,414.18
5. Step 5: Solve for x
   x = 75,480,414.18/9,965.43
6. Step 6: Final answer
   x = 7,574.23