Finding the Fourth Proportional to 9,792.72, 13,505.61 and 6,815.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,792.72 : 13,505.61 = 6,815.67 : x
2. Step 2: Convert to fraction form
   9,792.72/13,505.61 = 6,815.67/x
3. Step 3: Cross multiply
   9,792.72x = 13,505.61 × 6,815.67
4. Step 4: Simplify right side
   9,792.72x = 92,049,780.91
5. Step 5: Solve for x
   x = 92,049,780.91/9,792.72
6. Step 6: Final answer
   x = 9,399.82