Finding the Fourth Proportional to 21,665.88, 32,493.15 and 9,179.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,665.88 : 32,493.15 = 9,179.46 : x
2. Step 2: Convert to fraction form
   21,665.88/32,493.15 = 9,179.46/x
3. Step 3: Cross multiply
   21,665.88x = 32,493.15 × 9,179.46
4. Step 4: Simplify right side
   21,665.88x = 298,269,570.70
5. Step 5: Solve for x
   x = 298,269,570.70/21,665.88
6. Step 6: Final answer
   x = 13,766.79