Finding the Fourth Proportional to 5,151.50, 7,108.79 and 2,913.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,151.50 : 7,108.79 = 2,913.25 : x
2. Step 2: Convert to fraction form
   5,151.50/7,108.79 = 2,913.25/x
3. Step 3: Cross multiply
   5,151.50x = 7,108.79 × 2,913.25
4. Step 4: Simplify right side
   5,151.50x = 20,709,682.47
5. Step 5: Solve for x
   x = 20,709,682.47/5,151.50
6. Step 6: Final answer
   x = 4,020.13