Finding the Fourth Proportional to 11,778.89, 16,269.29 and 8,807.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,778.89 : 16,269.29 = 8,807.94 : x
2. Step 2: Convert to fraction form
   11,778.89/16,269.29 = 8,807.94/x
3. Step 3: Cross multiply
   11,778.89x = 16,269.29 × 8,807.94
4. Step 4: Simplify right side
   11,778.89x = 143,298,919.15
5. Step 5: Solve for x
   x = 143,298,919.15/11,778.89
6. Step 6: Final answer
   x = 12,165.75