Finding the Fourth Proportional to 12,087.38, 18,128.76 and 3,767.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.38 : 18,128.76 = 3,767.51 : x
2. Step 2: Convert to fraction form
   12,087.38/18,128.76 = 3,767.51/x
3. Step 3: Cross multiply
   12,087.38x = 18,128.76 × 3,767.51
4. Step 4: Simplify right side
   12,087.38x = 68,300,336.97
5. Step 5: Solve for x
   x = 68,300,336.97/12,087.38
6. Step 6: Final answer
   x = 5,650.55