Finding the Fourth Proportional to 8,087.05, 12,120.27 and 3,639.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,087.05 : 12,120.27 = 3,639.94 : x
2. Step 2: Convert to fraction form
   8,087.05/12,120.27 = 3,639.94/x
3. Step 3: Cross multiply
   8,087.05x = 12,120.27 × 3,639.94
4. Step 4: Simplify right side
   8,087.05x = 44,117,055.58
5. Step 5: Solve for x
   x = 44,117,055.58/8,087.05
6. Step 6: Final answer
   x = 5,455.27