Finding the Fourth Proportional to 3,948.12, 5,928.90 and 3,783

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.12 : 5,928.90 = 3,783 : x
2. Step 2: Convert to fraction form
   3,948.12/5,928.90 = 3,783/x
3. Step 3: Cross multiply
   3,948.12x = 5,928.90 × 3,783
4. Step 4: Simplify right side
   3,948.12x = 22,429,028.70
5. Step 5: Solve for x
   x = 22,429,028.70/3,948.12
6. Step 6: Final answer
   x = 5,680.94