Finding the Fourth Proportional to 8,768.50, 12,100.80 and 4,789.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,768.50 : 12,100.80 = 4,789.88 : x
2. Step 2: Convert to fraction form
   8,768.50/12,100.80 = 4,789.88/x
3. Step 3: Cross multiply
   8,768.50x = 12,100.80 × 4,789.88
4. Step 4: Simplify right side
   8,768.50x = 57,961,379.90
5. Step 5: Solve for x
   x = 57,961,379.90/8,768.50
6. Step 6: Final answer
   x = 6,610.18