Finding the Fourth Proportional to 9,839.63, 13,578.29 and 5,363.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.63 : 13,578.29 = 5,363.28 : x
2. Step 2: Convert to fraction form
   9,839.63/13,578.29 = 5,363.28/x
3. Step 3: Cross multiply
   9,839.63x = 13,578.29 × 5,363.28
4. Step 4: Simplify right side
   9,839.63x = 72,824,144.37
5. Step 5: Solve for x
   x = 72,824,144.37/9,839.63
6. Step 6: Final answer
   x = 7,401.11