Finding the Fourth Proportional to 9,629.36, 13,288.53 and 5,380.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,629.36 : 13,288.53 = 5,380.43 : x
2. Step 2: Convert to fraction form
   9,629.36/13,288.53 = 5,380.43/x
3. Step 3: Cross multiply
   9,629.36x = 13,288.53 × 5,380.43
4. Step 4: Simplify right side
   9,629.36x = 71,497,939.03
5. Step 5: Solve for x
   x = 71,497,939.03/9,629.36
6. Step 6: Final answer
   x = 7,425.00