Finding the Fourth Proportional to 9,262.86, 12,788.72 and 8,266.44

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.86 : 12,788.72 = 8,266.44 : x
2. Step 2: Convert to fraction form
   9,262.86/12,788.72 = 8,266.44/x
3. Step 3: Cross multiply
   9,262.86x = 12,788.72 × 8,266.44
4. Step 4: Simplify right side
   9,262.86x = 105,717,186.56
5. Step 5: Solve for x
   x = 105,717,186.56/9,262.86
6. Step 6: Final answer
   x = 11,413.02