Finding the Fourth Proportional to 7,128.71, 10,694.89 and 2,967.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,128.71 : 10,694.89 = 2,967.34 : x
2. Step 2: Convert to fraction form
   7,128.71/10,694.89 = 2,967.34/x
3. Step 3: Cross multiply
   7,128.71x = 10,694.89 × 2,967.34
4. Step 4: Simplify right side
   7,128.71x = 31,735,321.42
5. Step 5: Solve for x
   x = 31,735,321.42/7,128.71
6. Step 6: Final answer
   x = 4,451.76