Finding the Fourth Proportional to 10,950.72, 16,436.46 and 6,778.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,950.72 : 16,436.46 = 6,778.11 : x
2. Step 2: Convert to fraction form
   10,950.72/16,436.46 = 6,778.11/x
3. Step 3: Cross multiply
   10,950.72x = 16,436.46 × 6,778.11
4. Step 4: Simplify right side
   10,950.72x = 111,408,133.89
5. Step 5: Solve for x
   x = 111,408,133.89/10,950.72
6. Step 6: Final answer
   x = 10,173.59