Finding the Fourth Proportional to 9,636.19, 13,297.89 and 5,387.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636.19 : 13,297.89 = 5,387.25 : x
2. Step 2: Convert to fraction form
   9,636.19/13,297.89 = 5,387.25/x
3. Step 3: Cross multiply
   9,636.19x = 13,297.89 × 5,387.25
4. Step 4: Simplify right side
   9,636.19x = 71,639,057.90
5. Step 5: Solve for x
   x = 71,639,057.90/9,636.19
6. Step 6: Final answer
   x = 7,434.38