Finding the Fourth Proportional to 14,505.69, 20,017.83 and 8,218.05

Step by Step Solution

1. Step 1: Write the proportion equation
   14,505.69 : 20,017.83 = 8,218.05 : x
2. Step 2: Convert to fraction form
   14,505.69/20,017.83 = 8,218.05/x
3. Step 3: Cross multiply
   14,505.69x = 20,017.83 × 8,218.05
4. Step 4: Simplify right side
   14,505.69x = 164,507,527.83
5. Step 5: Solve for x
   x = 164,507,527.83/14,505.69
6. Step 6: Final answer
   x = 11,340.90