Finding the Fourth Proportional to 7,160.72, 10,744.25 and 2,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,160.72 : 10,744.25 = 2,778.50 : x
2. Step 2: Convert to fraction form
   7,160.72/10,744.25 = 2,778.50/x
3. Step 3: Cross multiply
   7,160.72x = 10,744.25 × 2,778.50
4. Step 4: Simplify right side
   7,160.72x = 29,852,911.59
5. Step 5: Solve for x
   x = 29,852,911.59/7,160.72
6. Step 6: Final answer
   x = 4,168.98