Finding the Fourth Proportional to 14,111.10, 19,475.04 and 8,142.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.10 : 19,475.04 = 8,142.78 : x
2. Step 2: Convert to fraction form
   14,111.10/19,475.04 = 8,142.78/x
3. Step 3: Cross multiply
   14,111.10x = 19,475.04 × 8,142.78
4. Step 4: Simplify right side
   14,111.10x = 158,580,966.21
5. Step 5: Solve for x
   x = 158,580,966.21/14,111.10
6. Step 6: Final answer
   x = 11,238.03