Finding the Fourth Proportional to 12,310.97, 18,464.83 and 3,426.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,310.97 : 18,464.83 = 3,426.89 : x
2. Step 2: Convert to fraction form
   12,310.97/18,464.83 = 3,426.89/x
3. Step 3: Cross multiply
   12,310.97x = 18,464.83 × 3,426.89
4. Step 4: Simplify right side
   12,310.97x = 63,276,941.28
5. Step 5: Solve for x
   x = 63,276,941.28/12,310.97
6. Step 6: Final answer
   x = 5,139.88