Finding the Fourth Proportional to 12,447.03, 18,682.38 and 9,150.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,447.03 : 18,682.38 = 9,150.12 : x
2. Step 2: Convert to fraction form
   12,447.03/18,682.38 = 9,150.12/x
3. Step 3: Cross multiply
   12,447.03x = 18,682.38 × 9,150.12
4. Step 4: Simplify right side
   12,447.03x = 170,946,018.89
5. Step 5: Solve for x
   x = 170,946,018.89/12,447.03
6. Step 6: Final answer
   x = 13,733.88