Finding the Fourth Proportional to 10,399.65, 14,351.30 and 5,683.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,399.65 : 14,351.30 = 5,683.96 : x
2. Step 2: Convert to fraction form
   10,399.65/14,351.30 = 5,683.96/x
3. Step 3: Cross multiply
   10,399.65x = 14,351.30 × 5,683.96
4. Step 4: Simplify right side
   10,399.65x = 81,572,265.24
5. Step 5: Solve for x
   x = 81,572,265.24/10,399.65
6. Step 6: Final answer
   x = 7,843.75