Finding the Fourth Proportional to 14,796.05, 20,417.72 and 8,424.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,796.05 : 20,417.72 = 8,424.20 : x
2. Step 2: Convert to fraction form
   14,796.05/20,417.72 = 8,424.20/x
3. Step 3: Cross multiply
   14,796.05x = 20,417.72 × 8,424.20
4. Step 4: Simplify right side
   14,796.05x = 172,002,956.82
5. Step 5: Solve for x
   x = 172,002,956.82/14,796.05
6. Step 6: Final answer
   x = 11,624.92