Finding the Fourth Proportional to 9,839.91, 13,578.59 and 5,363.66

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.91 : 13,578.59 = 5,363.66 : x
2. Step 2: Convert to fraction form
   9,839.91/13,578.59 = 5,363.66/x
3. Step 3: Cross multiply
   9,839.91x = 13,578.59 × 5,363.66
4. Step 4: Simplify right side
   9,839.91x = 72,830,845.33
5. Step 5: Solve for x
   x = 72,830,845.33/9,839.91
6. Step 6: Final answer
   x = 7,401.58