Finding the Fourth Proportional to 11,790.82, 16,255.91 and 8,557.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,790.82 : 16,255.91 = 8,557.73 : x
2. Step 2: Convert to fraction form
   11,790.82/16,255.91 = 8,557.73/x
3. Step 3: Cross multiply
   11,790.82x = 16,255.91 × 8,557.73
4. Step 4: Simplify right side
   11,790.82x = 139,113,750.72
5. Step 5: Solve for x
   x = 139,113,750.72/11,790.82
6. Step 6: Final answer
   x = 11,798.48