Finding the Fourth Proportional to 9,286.50, 12,818.61 and 5,560.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,286.50 : 12,818.61 = 5,560.50 : x
2. Step 2: Convert to fraction form
   9,286.50/12,818.61 = 5,560.50/x
3. Step 3: Cross multiply
   9,286.50x = 12,818.61 × 5,560.50
4. Step 4: Simplify right side
   9,286.50x = 71,277,880.91
5. Step 5: Solve for x
   x = 71,277,880.91/9,286.50
6. Step 6: Final answer
   x = 7,675.43