Finding the Fourth Proportional to 10,231.21, 14,117.61 and 5,754.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,231.21 : 14,117.61 = 5,754.79 : x
2. Step 2: Convert to fraction form
   10,231.21/14,117.61 = 5,754.79/x
3. Step 3: Cross multiply
   10,231.21x = 14,117.61 × 5,754.79
4. Step 4: Simplify right side
   10,231.21x = 81,243,880.85
5. Step 5: Solve for x
   x = 81,243,880.85/10,231.21
6. Step 6: Final answer
   x = 7,940.79