Finding the Fourth Proportional to 7,141.72, 10,708.47 and 2,758.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.72 : 10,708.47 = 2,758.60 : x
2. Step 2: Convert to fraction form
   7,141.72/10,708.47 = 2,758.60/x
3. Step 3: Cross multiply
   7,141.72x = 10,708.47 × 2,758.60
4. Step 4: Simplify right side
   7,141.72x = 29,540,385.34
5. Step 5: Solve for x
   x = 29,540,385.34/7,141.72
6. Step 6: Final answer
   x = 4,136.31