Finding the Fourth Proportional to 9,343.98, 12,894.71 and 5,986.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,343.98 : 12,894.71 = 5,986.80 : x
2. Step 2: Convert to fraction form
   9,343.98/12,894.71 = 5,986.80/x
3. Step 3: Cross multiply
   9,343.98x = 12,894.71 × 5,986.80
4. Step 4: Simplify right side
   9,343.98x = 77,198,019.89
5. Step 5: Solve for x
   x = 77,198,019.89/9,343.98
6. Step 6: Final answer
   x = 8,261.79