Finding the Fourth Proportional to 13,524.72, 18,664.25 and 8,147.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,524.72 : 18,664.25 = 8,147.81 : x
2. Step 2: Convert to fraction form
   13,524.72/18,664.25 = 8,147.81/x
3. Step 3: Cross multiply
   13,524.72x = 18,664.25 × 8,147.81
4. Step 4: Simplify right side
   13,524.72x = 152,072,628.73
5. Step 5: Solve for x
   x = 152,072,628.73/13,524.72
6. Step 6: Final answer
   x = 11,244.05