Finding the Fourth Proportional to 10,422.43, 14,383.92 and 5,707.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.43 : 14,383.92 = 5,707.42 : x
2. Step 2: Convert to fraction form
   10,422.43/14,383.92 = 5,707.42/x
3. Step 3: Cross multiply
   10,422.43x = 14,383.92 × 5,707.42
4. Step 4: Simplify right side
   10,422.43x = 82,095,072.69
5. Step 5: Solve for x
   x = 82,095,072.69/10,422.43
6. Step 6: Final answer
   x = 7,876.77