Finding the Fourth Proportional to 5,513.31, 7,608.74 and 3,123.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,513.31 : 7,608.74 = 3,123.25 : x
2. Step 2: Convert to fraction form
   5,513.31/7,608.74 = 3,123.25/x
3. Step 3: Cross multiply
   5,513.31x = 7,608.74 × 3,123.25
4. Step 4: Simplify right side
   5,513.31x = 23,763,997.21
5. Step 5: Solve for x
   x = 23,763,997.21/5,513.31
6. Step 6: Final answer
   x = 4,310.30