Finding the Fourth Proportional to 12,841.62, 17,721.39 and 7,176.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,841.62 : 17,721.39 = 7,176.37 : x
2. Step 2: Convert to fraction form
   12,841.62/17,721.39 = 7,176.37/x
3. Step 3: Cross multiply
   12,841.62x = 17,721.39 × 7,176.37
4. Step 4: Simplify right side
   12,841.62x = 127,175,233.61
5. Step 5: Solve for x
   x = 127,175,233.61/12,841.62
6. Step 6: Final answer
   x = 9,903.36