Finding the Fourth Proportional to 12,398, 17,109.76 and 7,366.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,398 : 17,109.76 = 7,366.56 : x
2. Step 2: Convert to fraction form
   12,398/17,109.76 = 7,366.56/x
3. Step 3: Cross multiply
   12,398x = 17,109.76 × 7,366.56
4. Step 4: Simplify right side
   12,398x = 126,040,073.63
5. Step 5: Solve for x
   x = 126,040,073.63/12,398
6. Step 6: Final answer
   x = 10,166.16