Finding the Fourth Proportional to 12,689, 17,510.82 and 7,101.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,689 : 17,510.82 = 7,101.08 : x
2. Step 2: Convert to fraction form
   12,689/17,510.82 = 7,101.08/x
3. Step 3: Cross multiply
   12,689x = 17,510.82 × 7,101.08
4. Step 4: Simplify right side
   12,689x = 124,345,733.69
5. Step 5: Solve for x
   x = 124,345,733.69/12,689
6. Step 6: Final answer
   x = 9,799.49