Finding the Fourth Proportional to 12,419.50, 18,630.33 and 3,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,419.50 : 18,630.33 = 3,185.50 : x
2. Step 2: Convert to fraction form
   12,419.50/18,630.33 = 3,185.50/x
3. Step 3: Cross multiply
   12,419.50x = 18,630.33 × 3,185.50
4. Step 4: Simplify right side
   12,419.50x = 59,346,916.22
5. Step 5: Solve for x
   x = 59,346,916.22/12,419.50
6. Step 6: Final answer
   x = 4,778.53