Finding the Fourth Proportional to 8,573.45, 12,861.12 and 2,728.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,573.45 : 12,861.12 = 2,728.69 : x
2. Step 2: Convert to fraction form
   8,573.45/12,861.12 = 2,728.69/x
3. Step 3: Cross multiply
   8,573.45x = 12,861.12 × 2,728.69
4. Step 4: Simplify right side
   8,573.45x = 35,094,009.53
5. Step 5: Solve for x
   x = 35,094,009.53/8,573.45
6. Step 6: Final answer
   x = 4,093.34