Finding the Fourth Proportional to 7,147.22, 10,722.54 and 2,216.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,147.22 : 10,722.54 = 2,216.94 : x
2. Step 2: Convert to fraction form
   7,147.22/10,722.54 = 2,216.94/x
3. Step 3: Cross multiply
   7,147.22x = 10,722.54 × 2,216.94
4. Step 4: Simplify right side
   7,147.22x = 23,771,227.83
5. Step 5: Solve for x
   x = 23,771,227.83/7,147.22
6. Step 6: Final answer
   x = 3,325.94