Finding the Fourth Proportional to 13,401.05, 18,480.69 and 8,917.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.05 : 18,480.69 = 8,917.02 : x
2. Step 2: Convert to fraction form
   13,401.05/18,480.69 = 8,917.02/x
3. Step 3: Cross multiply
   13,401.05x = 18,480.69 × 8,917.02
4. Step 4: Simplify right side
   13,401.05x = 164,792,682.34
5. Step 5: Solve for x
   x = 164,792,682.34/13,401.05
6. Step 6: Final answer
   x = 12,297.00