Finding the Fourth Proportional to 14,665.05, 21,998.43 and 5,659.21

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.05 : 21,998.43 = 5,659.21 : x
2. Step 2: Convert to fraction form
   14,665.05/21,998.43 = 5,659.21/x
3. Step 3: Cross multiply
   14,665.05x = 21,998.43 × 5,659.21
4. Step 4: Simplify right side
   14,665.05x = 124,493,762.54
5. Step 5: Solve for x
   x = 124,493,762.54/14,665.05
6. Step 6: Final answer
   x = 8,489.15