Finding the Fourth Proportional to 8,772.05, 12,105.60 and 4,793.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,772.05 : 12,105.60 = 4,793.40 : x
2. Step 2: Convert to fraction form
   8,772.05/12,105.60 = 4,793.40/x
3. Step 3: Cross multiply
   8,772.05x = 12,105.60 × 4,793.40
4. Step 4: Simplify right side
   8,772.05x = 58,026,983.04
5. Step 5: Solve for x
   x = 58,026,983.04/8,772.05
6. Step 6: Final answer
   x = 6,614.99