Finding the Fourth Proportional to 12,630.72, 18,946.02 and 3,396.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,630.72 : 18,946.02 = 3,396.72 : x
2. Step 2: Convert to fraction form
   12,630.72/18,946.02 = 3,396.72/x
3. Step 3: Cross multiply
   12,630.72x = 18,946.02 × 3,396.72
4. Step 4: Simplify right side
   12,630.72x = 64,354,325.05
5. Step 5: Solve for x
   x = 64,354,325.05/12,630.72
6. Step 6: Final answer
   x = 5,095.06