Finding the Fourth Proportional to 5,361.87, 7,399.82 and 3,123.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,361.87 : 7,399.82 = 3,123.61 : x
2. Step 2: Convert to fraction form
   5,361.87/7,399.82 = 3,123.61/x
3. Step 3: Cross multiply
   5,361.87x = 7,399.82 × 3,123.61
4. Step 4: Simplify right side
   5,361.87x = 23,114,151.75
5. Step 5: Solve for x
   x = 23,114,151.75/5,361.87
6. Step 6: Final answer
   x = 4,310.84