Finding the Fourth Proportional to 8,245.27, 12,347.86 and 4,284.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,245.27 : 12,347.86 = 4,284.07 : x
2. Step 2: Convert to fraction form
   8,245.27/12,347.86 = 4,284.07/x
3. Step 3: Cross multiply
   8,245.27x = 12,347.86 × 4,284.07
4. Step 4: Simplify right side
   8,245.27x = 52,899,096.59
5. Step 5: Solve for x
   x = 52,899,096.59/8,245.27
6. Step 6: Final answer
   x = 6,415.69