Finding the Fourth Proportional to 8,880.72, 12,255.60 and 4,901.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,880.72 : 12,255.60 = 4,901.76 : x
2. Step 2: Convert to fraction form
   8,880.72/12,255.60 = 4,901.76/x
3. Step 3: Cross multiply
   8,880.72x = 12,255.60 × 4,901.76
4. Step 4: Simplify right side
   8,880.72x = 60,074,009.86
5. Step 5: Solve for x
   x = 60,074,009.86/8,880.72
6. Step 6: Final answer
   x = 6,764.54