Finding the Fourth Proportional to 5,412.56, 7,469.34 and 2,928.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.56 : 7,469.34 = 2,928.56 : x
2. Step 2: Convert to fraction form
   5,412.56/7,469.34 = 2,928.56/x
3. Step 3: Cross multiply
   5,412.56x = 7,469.34 × 2,928.56
4. Step 4: Simplify right side
   5,412.56x = 21,874,429.02
5. Step 5: Solve for x
   x = 21,874,429.02/5,412.56
6. Step 6: Final answer
   x = 4,041.42