Finding the Fourth Proportional to 10,243.40, 14,135.76 and 5,706.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,243.40 : 14,135.76 = 5,706.08 : x
2. Step 2: Convert to fraction form
   10,243.40/14,135.76 = 5,706.08/x
3. Step 3: Cross multiply
   10,243.40x = 14,135.76 × 5,706.08
4. Step 4: Simplify right side
   10,243.40x = 80,659,777.42
5. Step 5: Solve for x
   x = 80,659,777.42/10,243.40
6. Step 6: Final answer
   x = 7,874.32