Finding the Fourth Proportional to 12,131.82, 18,185.31 and 6,859.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.82 : 18,185.31 = 6,859.26 : x
2. Step 2: Convert to fraction form
   12,131.82/18,185.31 = 6,859.26/x
3. Step 3: Cross multiply
   12,131.82x = 18,185.31 × 6,859.26
4. Step 4: Simplify right side
   12,131.82x = 124,737,769.47
5. Step 5: Solve for x
   x = 124,737,769.47/12,131.82
6. Step 6: Final answer
   x = 10,281.87