Finding the Fourth Proportional to 11,178.89, 16,766.51 and 3,385.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,178.89 : 16,766.51 = 3,385.88 : x
2. Step 2: Convert to fraction form
   11,178.89/16,766.51 = 3,385.88/x
3. Step 3: Cross multiply
   11,178.89x = 16,766.51 × 3,385.88
4. Step 4: Simplify right side
   11,178.89x = 56,769,290.12
5. Step 5: Solve for x
   x = 56,769,290.12/11,178.89
6. Step 6: Final answer
   x = 5,078.26