Finding the Fourth Proportional to 14,111.14, 21,164.98 and 8,191.25

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.14 : 21,164.98 = 8,191.25 : x
2. Step 2: Convert to fraction form
   14,111.14/21,164.98 = 8,191.25/x
3. Step 3: Cross multiply
   14,111.14x = 21,164.98 × 8,191.25
4. Step 4: Simplify right side
   14,111.14x = 173,367,674.86
5. Step 5: Solve for x
   x = 173,367,674.86/14,111.14
6. Step 6: Final answer
   x = 12,285.88