Finding the Fourth Proportional to 7,147.55, 10,722.37 and 2,217.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,147.55 : 10,722.37 = 2,217.59 : x
2. Step 2: Convert to fraction form
   7,147.55/10,722.37 = 2,217.59/x
3. Step 3: Cross multiply
   7,147.55x = 10,722.37 × 2,217.59
4. Step 4: Simplify right side
   7,147.55x = 23,777,761.33
5. Step 5: Solve for x
   x = 23,777,761.33/7,147.55
6. Step 6: Final answer
   x = 3,326.70