Finding the Fourth Proportional to 12,056.28, 16,620.54 and 8,863.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,056.28 : 16,620.54 = 8,863.94 : x
2. Step 2: Convert to fraction form
   12,056.28/16,620.54 = 8,863.94/x
3. Step 3: Cross multiply
   12,056.28x = 16,620.54 × 8,863.94
4. Step 4: Simplify right side
   12,056.28x = 147,323,469.33
5. Step 5: Solve for x
   x = 147,323,469.33/12,056.28
6. Step 6: Final answer
   x = 12,219.65