Finding the Fourth Proportional to 5,270.79, 7,906.56 and 1,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,270.79 : 7,906.56 = 1,572.72 : x
2. Step 2: Convert to fraction form
   5,270.79/7,906.56 = 1,572.72/x
3. Step 3: Cross multiply
   5,270.79x = 7,906.56 × 1,572.72
4. Step 4: Simplify right side
   5,270.79x = 12,434,805.04
5. Step 5: Solve for x
   x = 12,434,805.04/5,270.79
6. Step 6: Final answer
   x = 2,359.19