Finding the Fourth Proportional to 12,722.33, 17,556.35 and 7,057.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.33 : 17,556.35 = 7,057.16 : x
2. Step 2: Convert to fraction form
   12,722.33/17,556.35 = 7,057.16/x
3. Step 3: Cross multiply
   12,722.33x = 17,556.35 × 7,057.16
4. Step 4: Simplify right side
   12,722.33x = 123,897,913.73
5. Step 5: Solve for x
   x = 123,897,913.73/12,722.33
6. Step 6: Final answer
   x = 9,738.62