Finding the Fourth Proportional to 8,924.49, 12,315.57 and 4,945.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,924.49 : 12,315.57 = 4,945.56 : x
2. Step 2: Convert to fraction form
   8,924.49/12,315.57 = 4,945.56/x
3. Step 3: Cross multiply
   8,924.49x = 12,315.57 × 4,945.56
4. Step 4: Simplify right side
   8,924.49x = 60,907,390.37
5. Step 5: Solve for x
   x = 60,907,390.37/8,924.49
6. Step 6: Final answer
   x = 6,824.75