Finding the Fourth Proportional to 11,766.06, 16,238.16 and 8,580.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,766.06 : 16,238.16 = 8,580.42 : x
2. Step 2: Convert to fraction form
   11,766.06/16,238.16 = 8,580.42/x
3. Step 3: Cross multiply
   11,766.06x = 16,238.16 × 8,580.42
4. Step 4: Simplify right side
   11,766.06x = 139,330,232.83
5. Step 5: Solve for x
   x = 139,330,232.83/11,766.06
6. Step 6: Final answer
   x = 11,841.71