Finding the Fourth Proportional to 12,862.79, 17,747.33 and 7,556.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862.79 : 17,747.33 = 7,556.57 : x
2. Step 2: Convert to fraction form
   12,862.79/17,747.33 = 7,556.57/x
3. Step 3: Cross multiply
   12,862.79x = 17,747.33 × 7,556.57
4. Step 4: Simplify right side
   12,862.79x = 134,108,814.94
5. Step 5: Solve for x
   x = 134,108,814.94/12,862.79
6. Step 6: Final answer
   x = 10,426.11