Finding the Fourth Proportional to 12,103.98, 18,148.38 and 3,781.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,103.98 : 18,148.38 = 3,781.62 : x
2. Step 2: Convert to fraction form
   12,103.98/18,148.38 = 3,781.62/x
3. Step 3: Cross multiply
   12,103.98x = 18,148.38 × 3,781.62
4. Step 4: Simplify right side
   12,103.98x = 68,630,276.78
5. Step 5: Solve for x
   x = 68,630,276.78/12,103.98
6. Step 6: Final answer
   x = 5,670.06