Finding the Fourth Proportional to 9,839.25, 13,578.17 and 5,423.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.25 : 13,578.17 = 5,423.25 : x
2. Step 2: Convert to fraction form
   9,839.25/13,578.17 = 5,423.25/x
3. Step 3: Cross multiply
   9,839.25x = 13,578.17 × 5,423.25
4. Step 4: Simplify right side
   9,839.25x = 73,637,783.34
5. Step 5: Solve for x
   x = 73,637,783.34/9,839.25
6. Step 6: Final answer
   x = 7,484.09