Finding the Fourth Proportional to 9,571.86, 13,208.27 and 8,866.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,571.86 : 13,208.27 = 8,866.55 : x
2. Step 2: Convert to fraction form
   9,571.86/13,208.27 = 8,866.55/x
3. Step 3: Cross multiply
   9,571.86x = 13,208.27 × 8,866.55
4. Step 4: Simplify right side
   9,571.86x = 117,111,786.37
5. Step 5: Solve for x
   x = 117,111,786.37/9,571.86
6. Step 6: Final answer
   x = 12,235.01