Finding the Fourth Proportional to 12,403.88, 17,117.22 and 7,098.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,403.88 : 17,117.22 = 7,098.60 : x
2. Step 2: Convert to fraction form
   12,403.88/17,117.22 = 7,098.60/x
3. Step 3: Cross multiply
   12,403.88x = 17,117.22 × 7,098.60
4. Step 4: Simplify right side
   12,403.88x = 121,508,297.89
5. Step 5: Solve for x
   x = 121,508,297.89/12,403.88
6. Step 6: Final answer
   x = 9,795.99