Finding the Fourth Proportional to 12,581.10, 18,850.05 and 8,196.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.10 : 18,850.05 = 8,196.30 : x
2. Step 2: Convert to fraction form
   12,581.10/18,850.05 = 8,196.30/x
3. Step 3: Cross multiply
   12,581.10x = 18,850.05 × 8,196.30
4. Step 4: Simplify right side
   12,581.10x = 154,500,664.82
5. Step 5: Solve for x
   x = 154,500,664.82/12,581.10
6. Step 6: Final answer
   x = 12,280.38