Finding the Fourth Proportional to 8,788.79, 12,128.58 and 4,960.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.79 : 12,128.58 = 4,960.46 : x
2. Step 2: Convert to fraction form
   8,788.79/12,128.58 = 4,960.46/x
3. Step 3: Cross multiply
   8,788.79x = 12,128.58 × 4,960.46
4. Step 4: Simplify right side
   8,788.79x = 60,163,335.95
5. Step 5: Solve for x
   x = 60,163,335.95/8,788.79
6. Step 6: Final answer
   x = 6,845.46