Finding the Fourth Proportional to 9,647.72, 13,302.18 and 8,153

Step by Step Solution

1. Step 1: Write the proportion equation
   9,647.72 : 13,302.18 = 8,153 : x
2. Step 2: Convert to fraction form
   9,647.72/13,302.18 = 8,153/x
3. Step 3: Cross multiply
   9,647.72x = 13,302.18 × 8,153
4. Step 4: Simplify right side
   9,647.72x = 108,452,673.54
5. Step 5: Solve for x
   x = 108,452,673.54/9,647.72
6. Step 6: Final answer
   x = 11,241.27