Finding the Fourth Proportional to 8,928.86, 12,321.34 and 4,949.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.86 : 12,321.34 = 4,949.74 : x
2. Step 2: Convert to fraction form
   8,928.86/12,321.34 = 4,949.74/x
3. Step 3: Cross multiply
   8,928.86x = 12,321.34 × 4,949.74
4. Step 4: Simplify right side
   8,928.86x = 60,987,429.45
5. Step 5: Solve for x
   x = 60,987,429.45/8,928.86
6. Step 6: Final answer
   x = 6,830.37