Finding the Fourth Proportional to 8,744.78, 13,089.62 and 5,443.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,744.78 : 13,089.62 = 5,443.22 : x
2. Step 2: Convert to fraction form
   8,744.78/13,089.62 = 5,443.22/x
3. Step 3: Cross multiply
   8,744.78x = 13,089.62 × 5,443.22
4. Step 4: Simplify right side
   8,744.78x = 71,249,681.38
5. Step 5: Solve for x
   x = 71,249,681.38/8,744.78
6. Step 6: Final answer
   x = 8,147.68