Finding the Fourth Proportional to 14,451.91, 21,664.72 and 5,561.57

Step by Step Solution

1. Step 1: Write the proportion equation
   14,451.91 : 21,664.72 = 5,561.57 : x
2. Step 2: Convert to fraction form
   14,451.91/21,664.72 = 5,561.57/x
3. Step 3: Cross multiply
   14,451.91x = 21,664.72 × 5,561.57
4. Step 4: Simplify right side
   14,451.91x = 120,489,764.78
5. Step 5: Solve for x
   x = 120,489,764.78/14,451.91
6. Step 6: Final answer
   x = 8,337.29