Finding the Fourth Proportional to 12,494.74, 17,222.71 and 8,460.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.74 : 17,222.71 = 8,460.28 : x
2. Step 2: Convert to fraction form
   12,494.74/17,222.71 = 8,460.28/x
3. Step 3: Cross multiply
   12,494.74x = 17,222.71 × 8,460.28
4. Step 4: Simplify right side
   12,494.74x = 145,708,948.96
5. Step 5: Solve for x
   x = 145,708,948.96/12,494.74
6. Step 6: Final answer
   x = 11,661.62