Finding the Fourth Proportional to 12,719.35, 17,543.91 and 8,950.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.35 : 17,543.91 = 8,950.42 : x
2. Step 2: Convert to fraction form
   12,719.35/17,543.91 = 8,950.42/x
3. Step 3: Cross multiply
   12,719.35x = 17,543.91 × 8,950.42
4. Step 4: Simplify right side
   12,719.35x = 157,025,362.94
5. Step 5: Solve for x
   x = 157,025,362.94/12,719.35
6. Step 6: Final answer
   x = 12,345.39