Finding the Fourth Proportional to 8,185.38, 12,281.72 and 4,288.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,185.38 : 12,281.72 = 4,288.88 : x
2. Step 2: Convert to fraction form
   8,185.38/12,281.72 = 4,288.88/x
3. Step 3: Cross multiply
   8,185.38x = 12,281.72 × 4,288.88
4. Step 4: Simplify right side
   8,185.38x = 52,674,823.27
5. Step 5: Solve for x
   x = 52,674,823.27/8,185.38
6. Step 6: Final answer
   x = 6,435.23