Finding the Fourth Proportional to 12,617.94, 18,929.61 and 3,853.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,617.94 : 18,929.61 = 3,853.50 : x
2. Step 2: Convert to fraction form
   12,617.94/18,929.61 = 3,853.50/x
3. Step 3: Cross multiply
   12,617.94x = 18,929.61 × 3,853.50
4. Step 4: Simplify right side
   12,617.94x = 72,945,252.14
5. Step 5: Solve for x
   x = 72,945,252.14/12,617.94
6. Step 6: Final answer
   x = 5,781.07