Finding the Fourth Proportional to 9,262.84, 12,785.59 and 5,286.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262.84 : 12,785.59 = 5,286.60 : x
2. Step 2: Convert to fraction form
   9,262.84/12,785.59 = 5,286.60/x
3. Step 3: Cross multiply
   9,262.84x = 12,785.59 × 5,286.60
4. Step 4: Simplify right side
   9,262.84x = 67,592,300.09
5. Step 5: Solve for x
   x = 67,592,300.09/9,262.84
6. Step 6: Final answer
   x = 7,297.15