Finding the Fourth Proportional to 8,752.28, 12,078.86 and 4,976.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,752.28 : 12,078.86 = 4,976.63 : x
2. Step 2: Convert to fraction form
   8,752.28/12,078.86 = 4,976.63/x
3. Step 3: Cross multiply
   8,752.28x = 12,078.86 × 4,976.63
4. Step 4: Simplify right side
   8,752.28x = 60,112,017.04
5. Step 5: Solve for x
   x = 60,112,017.04/8,752.28
6. Step 6: Final answer
   x = 6,868.16