Finding the Fourth Proportional to 11,398.25, 17,103.29 and 8,624.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,398.25 : 17,103.29 = 8,624.09 : x
2. Step 2: Convert to fraction form
   11,398.25/17,103.29 = 8,624.09/x
3. Step 3: Cross multiply
   11,398.25x = 17,103.29 × 8,624.09
4. Step 4: Simplify right side
   11,398.25x = 147,500,311.89
5. Step 5: Solve for x
   x = 147,500,311.89/11,398.25
6. Step 6: Final answer
   x = 12,940.61