Finding the Fourth Proportional to 12,154.86, 16,776.83 and 7,916.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,154.86 : 16,776.83 = 7,916.49 : x
2. Step 2: Convert to fraction form
   12,154.86/16,776.83 = 7,916.49/x
3. Step 3: Cross multiply
   12,154.86x = 16,776.83 × 7,916.49
4. Step 4: Simplify right side
   12,154.86x = 132,813,626.72
5. Step 5: Solve for x
   x = 132,813,626.72/12,154.86
6. Step 6: Final answer
   x = 10,926.79