Finding the Fourth Proportional to 9,339.82, 12,890.37 and 5,307.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.82 : 12,890.37 = 5,307.82 : x
2. Step 2: Convert to fraction form
   9,339.82/12,890.37 = 5,307.82/x
3. Step 3: Cross multiply
   9,339.82x = 12,890.37 × 5,307.82
4. Step 4: Simplify right side
   9,339.82x = 68,419,763.69
5. Step 5: Solve for x
   x = 68,419,763.69/9,339.82
6. Step 6: Final answer
   x = 7,325.60