Finding the Fourth Proportional to 14,080.86, 19,431.50 and 8,112.40

Step by Step Solution

1. Step 1: Write the proportion equation
   14,080.86 : 19,431.50 = 8,112.40 : x
2. Step 2: Convert to fraction form
   14,080.86/19,431.50 = 8,112.40/x
3. Step 3: Cross multiply
   14,080.86x = 19,431.50 × 8,112.40
4. Step 4: Simplify right side
   14,080.86x = 157,636,120.76
5. Step 5: Solve for x
   x = 157,636,120.76/14,080.86
6. Step 6: Final answer
   x = 11,195.06