Finding the Fourth Proportional to 12,556.82, 17,328.70 and 7,105.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,556.82 : 17,328.70 = 7,105.46 : x
2. Step 2: Convert to fraction form
   12,556.82/17,328.70 = 7,105.46/x
3. Step 3: Cross multiply
   12,556.82x = 17,328.70 × 7,105.46
4. Step 4: Simplify right side
   12,556.82x = 123,128,306.94
5. Step 5: Solve for x
   x = 123,128,306.94/12,556.82
6. Step 6: Final answer
   x = 9,805.69