Finding the Fourth Proportional to 14,635.20, 20,196.78 and 8,262.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,635.20 : 20,196.78 = 8,262.15 : x
2. Step 2: Convert to fraction form
   14,635.20/20,196.78 = 8,262.15/x
3. Step 3: Cross multiply
   14,635.20x = 20,196.78 × 8,262.15
4. Step 4: Simplify right side
   14,635.20x = 166,868,825.88
5. Step 5: Solve for x
   x = 166,868,825.88/14,635.20
6. Step 6: Final answer
   x = 11,401.88