Finding the Fourth Proportional to 12,855.03, 17,743.82 and 7,823.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,855.03 : 17,743.82 = 7,823.71 : x
2. Step 2: Convert to fraction form
   12,855.03/17,743.82 = 7,823.71/x
3. Step 3: Cross multiply
   12,855.03x = 17,743.82 × 7,823.71
4. Step 4: Simplify right side
   12,855.03x = 138,822,501.97
5. Step 5: Solve for x
   x = 138,822,501.97/12,855.03
6. Step 6: Final answer
   x = 10,799.08