Finding the Fourth Proportional to 9,965.03, 13,751.75 and 5,488.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.03 : 13,751.75 = 5,488.79 : x
2. Step 2: Convert to fraction form
   9,965.03/13,751.75 = 5,488.79/x
3. Step 3: Cross multiply
   9,965.03x = 13,751.75 × 5,488.79
4. Step 4: Simplify right side
   9,965.03x = 75,480,407.76
5. Step 5: Solve for x
   x = 75,480,407.76/9,965.03
6. Step 6: Final answer
   x = 7,574.53