Finding the Fourth Proportional to 14,111.55, 19,471.89 and 8,142.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.55 : 19,471.89 = 8,142.12 : x
2. Step 2: Convert to fraction form
   14,111.55/19,471.89 = 8,142.12/x
3. Step 3: Cross multiply
   14,111.55x = 19,471.89 × 8,142.12
4. Step 4: Simplify right side
   14,111.55x = 158,542,367.65
5. Step 5: Solve for x
   x = 158,542,367.65/14,111.55
6. Step 6: Final answer
   x = 11,234.94