Finding the Fourth Proportional to 8,275.72, 12,408.72 and 3,887.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,275.72 : 12,408.72 = 3,887.16 : x
2. Step 2: Convert to fraction form
   8,275.72/12,408.72 = 3,887.16/x
3. Step 3: Cross multiply
   8,275.72x = 12,408.72 × 3,887.16
4. Step 4: Simplify right side
   8,275.72x = 48,234,680.04
5. Step 5: Solve for x
   x = 48,234,680.04/8,275.72
6. Step 6: Final answer
   x = 5,828.46