Finding the Fourth Proportional to 7,128.22, 10,693.32 and 2,198.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,128.22 : 10,693.32 = 2,198.25 : x
2. Step 2: Convert to fraction form
   7,128.22/10,693.32 = 2,198.25/x
3. Step 3: Cross multiply
   7,128.22x = 10,693.32 × 2,198.25
4. Step 4: Simplify right side
   7,128.22x = 23,506,590.69
5. Step 5: Solve for x
   x = 23,506,590.69/7,128.22
6. Step 6: Final answer
   x = 3,297.68