Finding the Fourth Proportional to 5,743.89, 7,928.57 and 3,385.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,743.89 : 7,928.57 = 3,385.88 : x
2. Step 2: Convert to fraction form
   5,743.89/7,928.57 = 3,385.88/x
3. Step 3: Cross multiply
   5,743.89x = 7,928.57 × 3,385.88
4. Step 4: Simplify right side
   5,743.89x = 26,845,155.41
5. Step 5: Solve for x
   x = 26,845,155.41/5,743.89
6. Step 6: Final answer
   x = 4,673.69