Finding the Fourth Proportional to 9,629.16, 13,287.77 and 5,379.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,629.16 : 13,287.77 = 5,379.38 : x
2. Step 2: Convert to fraction form
   9,629.16/13,287.77 = 5,379.38/x
3. Step 3: Cross multiply
   9,629.16x = 13,287.77 × 5,379.38
4. Step 4: Simplify right side
   9,629.16x = 71,479,870.85
5. Step 5: Solve for x
   x = 71,479,870.85/9,629.16
6. Step 6: Final answer
   x = 7,423.27