Finding the Fourth Proportional to 9,967.25, 13,755.12 and 5,491.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,967.25 : 13,755.12 = 5,491.29 : x
2. Step 2: Convert to fraction form
   9,967.25/13,755.12 = 5,491.29/x
3. Step 3: Cross multiply
   9,967.25x = 13,755.12 × 5,491.29
4. Step 4: Simplify right side
   9,967.25x = 75,533,383.89
5. Step 5: Solve for x
   x = 75,533,383.89/9,967.25
6. Step 6: Final answer
   x = 7,578.15