Finding the Fourth Proportional to 14,111.32, 19,476.48 and 8,147.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.32 : 19,476.48 = 8,147.20 : x
2. Step 2: Convert to fraction form
   14,111.32/19,476.48 = 8,147.20/x
3. Step 3: Cross multiply
   14,111.32x = 19,476.48 × 8,147.20
4. Step 4: Simplify right side
   14,111.32x = 158,678,777.86
5. Step 5: Solve for x
   x = 158,678,777.86/14,111.32
6. Step 6: Final answer
   x = 11,244.79