Finding the Fourth Proportional to 14,109.48, 19,469.70 and 8,142.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,109.48 : 19,469.70 = 8,142.12 : x
2. Step 2: Convert to fraction form
   14,109.48/19,469.70 = 8,142.12/x
3. Step 3: Cross multiply
   14,109.48x = 19,469.70 × 8,142.12
4. Step 4: Simplify right side
   14,109.48x = 158,524,633.76
5. Step 5: Solve for x
   x = 158,524,633.76/14,109.48
6. Step 6: Final answer
   x = 11,235.33