Finding the Fourth Proportional to 14,111.30, 19,469.22 and 8,142.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.30 : 19,469.22 = 8,142.20 : x
2. Step 2: Convert to fraction form
   14,111.30/19,469.22 = 8,142.20/x
3. Step 3: Cross multiply
   14,111.30x = 19,469.22 × 8,142.20
4. Step 4: Simplify right side
   14,111.30x = 158,522,283.08
5. Step 5: Solve for x
   x = 158,522,283.08/14,111.30
6. Step 6: Final answer
   x = 11,233.71