Finding the Fourth Proportional to 8,665.28, 13,005.36 and 3,474.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.28 : 13,005.36 = 3,474.72 : x
2. Step 2: Convert to fraction form
   8,665.28/13,005.36 = 3,474.72/x
3. Step 3: Cross multiply
   8,665.28x = 13,005.36 × 3,474.72
4. Step 4: Simplify right side
   8,665.28x = 45,189,984.50
5. Step 5: Solve for x
   x = 45,189,984.50/8,665.28
6. Step 6: Final answer
   x = 5,215.06