Finding the Fourth Proportional to 8,768.10, 12,100.24 and 4,789.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,768.10 : 12,100.24 = 4,789.40 : x
2. Step 2: Convert to fraction form
   8,768.10/12,100.24 = 4,789.40/x
3. Step 3: Cross multiply
   8,768.10x = 12,100.24 × 4,789.40
4. Step 4: Simplify right side
   8,768.10x = 57,952,889.46
5. Step 5: Solve for x
   x = 57,952,889.46/8,768.10
6. Step 6: Final answer
   x = 6,609.52