Finding the Fourth Proportional to 5,412.72, 7,469.48 and 2,928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.72 : 7,469.48 = 2,928.72 : x
2. Step 2: Convert to fraction form
   5,412.72/7,469.48 = 2,928.72/x
3. Step 3: Cross multiply
   5,412.72x = 7,469.48 × 2,928.72
4. Step 4: Simplify right side
   5,412.72x = 21,876,015.47
5. Step 5: Solve for x
   x = 21,876,015.47/5,412.72
6. Step 6: Final answer
   x = 4,041.59