Finding the Fourth Proportional to 21,728.89, 32,599.89 and 9,084.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,728.89 : 32,599.89 = 9,084.79 : x
2. Step 2: Convert to fraction form
   21,728.89/32,599.89 = 9,084.79/x
3. Step 3: Cross multiply
   21,728.89x = 32,599.89 × 9,084.79
4. Step 4: Simplify right side
   21,728.89x = 296,162,991.67
5. Step 5: Solve for x
   x = 296,162,991.67/21,728.89
6. Step 6: Final answer
   x = 13,629.92