Finding the Fourth Proportional to 8,185.32, 12,267.74 and 4,287.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,185.32 : 12,267.74 = 4,287.72 : x
2. Step 2: Convert to fraction form
   8,185.32/12,267.74 = 4,287.72/x
3. Step 3: Cross multiply
   8,185.32x = 12,267.74 × 4,287.72
4. Step 4: Simplify right side
   8,185.32x = 52,600,634.15
5. Step 5: Solve for x
   x = 52,600,634.15/8,185.32
6. Step 6: Final answer
   x = 6,426.22