Finding the Fourth Proportional to 8,634.72, 12,954.82 and 3,087.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,634.72 : 12,954.82 = 3,087.94 : x
2. Step 2: Convert to fraction form
   8,634.72/12,954.82 = 3,087.94/x
3. Step 3: Cross multiply
   8,634.72x = 12,954.82 × 3,087.94
4. Step 4: Simplify right side
   8,634.72x = 40,003,706.87
5. Step 5: Solve for x
   x = 40,003,706.87/8,634.72
6. Step 6: Final answer
   x = 4,632.89