Finding the Fourth Proportional to 10,422.72, 14,383.68 and 5,706.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.72 : 14,383.68 = 5,706.96 : x
2. Step 2: Convert to fraction form
   10,422.72/14,383.68 = 5,706.96/x
3. Step 3: Cross multiply
   10,422.72x = 14,383.68 × 5,706.96
4. Step 4: Simplify right side
   10,422.72x = 82,087,086.41
5. Step 5: Solve for x
   x = 82,087,086.41/10,422.72
6. Step 6: Final answer
   x = 7,875.78