Finding the Fourth Proportional to 9,964.65, 13,751.31 and 5,488.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.65 : 13,751.31 = 5,488.42 : x
2. Step 2: Convert to fraction form
   9,964.65/13,751.31 = 5,488.42/x
3. Step 3: Cross multiply
   9,964.65x = 13,751.31 × 5,488.42
4. Step 4: Simplify right side
   9,964.65x = 75,472,930.45
5. Step 5: Solve for x
   x = 75,472,930.45/9,964.65
6. Step 6: Final answer
   x = 7,574.07