Finding the Fourth Proportional to 12,155.82, 18,229.56 and 5,911.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.82 : 18,229.56 = 5,911.84 : x
2. Step 2: Convert to fraction form
   12,155.82/18,229.56 = 5,911.84/x
3. Step 3: Cross multiply
   12,155.82x = 18,229.56 × 5,911.84
4. Step 4: Simplify right side
   12,155.82x = 107,770,140.07
5. Step 5: Solve for x
   x = 107,770,140.07/12,155.82
6. Step 6: Final answer
   x = 8,865.72