Finding the Fourth Proportional to 8,662.72, 12,996 and 4,765.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.72 : 12,996 = 4,765.12 : x
2. Step 2: Convert to fraction form
   8,662.72/12,996 = 4,765.12/x
3. Step 3: Cross multiply
   8,662.72x = 12,996 × 4,765.12
4. Step 4: Simplify right side
   8,662.72x = 61,927,499.52
5. Step 5: Solve for x
   x = 61,927,499.52/8,662.72
6. Step 6: Final answer
   x = 7,148.74