Finding the Fourth Proportional to 12,447.42, 17,153.82 and 8,904.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,447.42 : 17,153.82 = 8,904.48 : x
2. Step 2: Convert to fraction form
   12,447.42/17,153.82 = 8,904.48/x
3. Step 3: Cross multiply
   12,447.42x = 17,153.82 × 8,904.48
4. Step 4: Simplify right side
   12,447.42x = 152,745,847.11
5. Step 5: Solve for x
   x = 152,745,847.11/12,447.42
6. Step 6: Final answer
   x = 12,271.29