Finding the Fourth Proportional to 10,821.54, 14,933.34 and 6,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.54 : 14,933.34 = 6,105.72 : x
2. Step 2: Convert to fraction form
   10,821.54/14,933.34 = 6,105.72/x
3. Step 3: Cross multiply
   10,821.54x = 14,933.34 × 6,105.72
4. Step 4: Simplify right side
   10,821.54x = 91,178,792.70
5. Step 5: Solve for x
   x = 91,178,792.70/10,821.54
6. Step 6: Final answer
   x = 8,425.68