Finding the Fourth Proportional to 12,426.62, 18,643.18 and 4,635.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.62 : 18,643.18 = 4,635.50 : x
2. Step 2: Convert to fraction form
   12,426.62/18,643.18 = 4,635.50/x
3. Step 3: Cross multiply
   12,426.62x = 18,643.18 × 4,635.50
4. Step 4: Simplify right side
   12,426.62x = 86,420,460.89
5. Step 5: Solve for x
   x = 86,420,460.89/12,426.62
6. Step 6: Final answer
   x = 6,954.46