Finding the Fourth Proportional to 8,272.86, 12,408.06 and 4,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.86 : 12,408.06 = 4,111.50 : x
2. Step 2: Convert to fraction form
   8,272.86/12,408.06 = 4,111.50/x
3. Step 3: Cross multiply
   8,272.86x = 12,408.06 × 4,111.50
4. Step 4: Simplify right side
   8,272.86x = 51,015,738.69
5. Step 5: Solve for x
   x = 51,015,738.69/8,272.86
6. Step 6: Final answer
   x = 6,166.64