Finding the Fourth Proportional to 14,408.89, 21,595.15 and 7,728.82

Step by Step Solution

1. Step 1: Write the proportion equation
   14,408.89 : 21,595.15 = 7,728.82 : x
2. Step 2: Convert to fraction form
   14,408.89/21,595.15 = 7,728.82/x
3. Step 3: Cross multiply
   14,408.89x = 21,595.15 × 7,728.82
4. Step 4: Simplify right side
   14,408.89x = 166,904,880.60
5. Step 5: Solve for x
   x = 166,904,880.60/14,408.89
6. Step 6: Final answer
   x = 11,583.47