Finding the Fourth Proportional to 14,080.32, 19,431.72 and 8,112.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,080.32 : 19,431.72 = 8,112.78 : x
2. Step 2: Convert to fraction form
   14,080.32/19,431.72 = 8,112.78/x
3. Step 3: Cross multiply
   14,080.32x = 19,431.72 × 8,112.78
4. Step 4: Simplify right side
   14,080.32x = 157,645,269.38
5. Step 5: Solve for x
   x = 157,645,269.38/14,080.32
6. Step 6: Final answer
   x = 11,196.14