Finding the Fourth Proportional to 12,449.42, 17,156.58 and 8,906.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,449.42 : 17,156.58 = 8,906.48 : x
2. Step 2: Convert to fraction form
   12,449.42/17,156.58 = 8,906.48/x
3. Step 3: Cross multiply
   12,449.42x = 17,156.58 × 8,906.48
4. Step 4: Simplify right side
   12,449.42x = 152,804,736.64
5. Step 5: Solve for x
   x = 152,804,736.64/12,449.42
6. Step 6: Final answer
   x = 12,274.04