Finding the Fourth Proportional to 5,123.16, 7,683.29 and 1,424.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.16 : 7,683.29 = 1,424.55 : x
2. Step 2: Convert to fraction form
   5,123.16/7,683.29 = 1,424.55/x
3. Step 3: Cross multiply
   5,123.16x = 7,683.29 × 1,424.55
4. Step 4: Simplify right side
   5,123.16x = 10,945,223.65
5. Step 5: Solve for x
   x = 10,945,223.65/5,123.16
6. Step 6: Final answer
   x = 2,136.42