Finding the Fourth Proportional to 9,964.83, 13,751.47 and 5,488.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.83 : 13,751.47 = 5,488.57 : x
2. Step 2: Convert to fraction form
   9,964.83/13,751.47 = 5,488.57/x
3. Step 3: Cross multiply
   9,964.83x = 13,751.47 × 5,488.57
4. Step 4: Simplify right side
   9,964.83x = 75,475,929.75
5. Step 5: Solve for x
   x = 75,475,929.75/9,964.83
6. Step 6: Final answer
   x = 7,574.23