Finding the Fourth Proportional to 5,743.89, 7,923.87 and 3,618.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,743.89 : 7,923.87 = 3,618.45 : x
2. Step 2: Convert to fraction form
   5,743.89/7,923.87 = 3,618.45/x
3. Step 3: Cross multiply
   5,743.89x = 7,923.87 × 3,618.45
4. Step 4: Simplify right side
   5,743.89x = 28,672,127.40
5. Step 5: Solve for x
   x = 28,672,127.40/5,743.89
6. Step 6: Final answer
   x = 4,991.76