Finding the Fourth Proportional to 8,485.46, 12,728.18 and 4,786.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485.46 : 12,728.18 = 4,786.01 : x
2. Step 2: Convert to fraction form
   8,485.46/12,728.18 = 4,786.01/x
3. Step 3: Cross multiply
   8,485.46x = 12,728.18 × 4,786.01
4. Step 4: Simplify right side
   8,485.46x = 60,917,240.55
5. Step 5: Solve for x
   x = 60,917,240.55/8,485.46
6. Step 6: Final answer
   x = 7,179.01