Finding the Fourth Proportional to 11,855.75, 16,356.78 and 7,377.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,855.75 : 16,356.78 = 7,377.89 : x
2. Step 2: Convert to fraction form
   11,855.75/16,356.78 = 7,377.89/x
3. Step 3: Cross multiply
   11,855.75x = 16,356.78 × 7,377.89
4. Step 4: Simplify right side
   11,855.75x = 120,678,441.81
5. Step 5: Solve for x
   x = 120,678,441.81/11,855.75
6. Step 6: Final answer
   x = 10,178.90