Finding the Fourth Proportional to 14,231.86, 19,640.46 and 7,945.42

Step by Step Solution

1. Step 1: Write the proportion equation
   14,231.86 : 19,640.46 = 7,945.42 : x
2. Step 2: Convert to fraction form
   14,231.86/19,640.46 = 7,945.42/x
3. Step 3: Cross multiply
   14,231.86x = 19,640.46 × 7,945.42
4. Step 4: Simplify right side
   14,231.86x = 156,051,703.69
5. Step 5: Solve for x
   x = 156,051,703.69/14,231.86
6. Step 6: Final answer
   x = 10,964.95