Finding the Fourth Proportional to 8,091.57, 11,166.72 and 4,554.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.57 : 11,166.72 = 4,554.78 : x
2. Step 2: Convert to fraction form
   8,091.57/11,166.72 = 4,554.78/x
3. Step 3: Cross multiply
   8,091.57x = 11,166.72 × 4,554.78
4. Step 4: Simplify right side
   8,091.57x = 50,861,952.92
5. Step 5: Solve for x
   x = 50,861,952.92/8,091.57
6. Step 6: Final answer
   x = 6,285.80