Finding the Fourth Proportional to 5,412.59, 7,469.31 and 2,928.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.59 : 7,469.31 = 2,928.59 : x
2. Step 2: Convert to fraction form
   5,412.59/7,469.31 = 2,928.59/x
3. Step 3: Cross multiply
   5,412.59x = 7,469.31 × 2,928.59
4. Step 4: Simplify right side
   5,412.59x = 21,874,509.23
5. Step 5: Solve for x
   x = 21,874,509.23/5,412.59
6. Step 6: Final answer
   x = 4,041.42