Finding the Fourth Proportional to 8,923.94, 12,315.14 and 4,945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,923.94 : 12,315.14 = 4,945.12 : x
2. Step 2: Convert to fraction form
   8,923.94/12,315.14 = 4,945.12/x
3. Step 3: Cross multiply
   8,923.94x = 12,315.14 × 4,945.12
4. Step 4: Simplify right side
   8,923.94x = 60,899,808.15
5. Step 5: Solve for x
   x = 60,899,808.15/8,923.94
6. Step 6: Final answer
   x = 6,824.32