Finding the Fourth Proportional to 5,123.69, 7,684.15 and 2,201.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.69 : 7,684.15 = 2,201.31 : x
2. Step 2: Convert to fraction form
   5,123.69/7,684.15 = 2,201.31/x
3. Step 3: Cross multiply
   5,123.69x = 7,684.15 × 2,201.31
4. Step 4: Simplify right side
   5,123.69x = 16,915,196.24
5. Step 5: Solve for x
   x = 16,915,196.24/5,123.69
6. Step 6: Final answer
   x = 3,301.37