Finding the Fourth Proportional to 12,445.74, 18,665.35 and 8,496.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,445.74 : 18,665.35 = 8,496.27 : x
2. Step 2: Convert to fraction form
   12,445.74/18,665.35 = 8,496.27/x
3. Step 3: Cross multiply
   12,445.74x = 18,665.35 × 8,496.27
4. Step 4: Simplify right side
   12,445.74x = 158,585,832.00
5. Step 5: Solve for x
   x = 158,585,832.00/12,445.74
6. Step 6: Final answer
   x = 12,742.18