Finding the Fourth Proportional to 9,887.24, 13,571.72 and 8,743.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.24 : 13,571.72 = 8,743.12 : x
2. Step 2: Convert to fraction form
   9,887.24/13,571.72 = 8,743.12/x
3. Step 3: Cross multiply
   9,887.24x = 13,571.72 × 8,743.12
4. Step 4: Simplify right side
   9,887.24x = 118,659,176.57
5. Step 5: Solve for x
   x = 118,659,176.57/9,887.24
6. Step 6: Final answer
   x = 12,001.24