Finding the Fourth Proportional to 21,559.88, 32,350.89 and 8,919.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,559.88 : 32,350.89 = 8,919.02 : x
2. Step 2: Convert to fraction form
   21,559.88/32,350.89 = 8,919.02/x
3. Step 3: Cross multiply
   21,559.88x = 32,350.89 × 8,919.02
4. Step 4: Simplify right side
   21,559.88x = 288,538,234.93
5. Step 5: Solve for x
   x = 288,538,234.93/21,559.88
6. Step 6: Final answer
   x = 13,383.11