Finding the Fourth Proportional to 5,123.16, 7,683.32 and 2,200.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.16 : 7,683.32 = 2,200.79 : x
2. Step 2: Convert to fraction form
   5,123.16/7,683.32 = 2,200.79/x
3. Step 3: Cross multiply
   5,123.16x = 7,683.32 × 2,200.79
4. Step 4: Simplify right side
   5,123.16x = 16,909,398.53
5. Step 5: Solve for x
   x = 16,909,398.53/5,123.16
6. Step 6: Final answer
   x = 3,300.58