Finding the Fourth Proportional to 8,333.43, 12,426.63 and 8,258.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,333.43 : 12,426.63 = 8,258.42 : x
2. Step 2: Convert to fraction form
   8,333.43/12,426.63 = 8,258.42/x
3. Step 3: Cross multiply
   8,333.43x = 12,426.63 × 8,258.42
4. Step 4: Simplify right side
   8,333.43x = 102,624,319.40
5. Step 5: Solve for x
   x = 102,624,319.40/8,333.43
6. Step 6: Final answer
   x = 12,314.78