Finding the Fourth Proportional to 12,169.89, 18,255.84 and 3,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,169.89 : 18,255.84 = 3,404.88 : x
2. Step 2: Convert to fraction form
   12,169.89/18,255.84 = 3,404.88/x
3. Step 3: Cross multiply
   12,169.89x = 18,255.84 × 3,404.88
4. Step 4: Simplify right side
   12,169.89x = 62,158,944.50
5. Step 5: Solve for x
   x = 62,158,944.50/12,169.89
6. Step 6: Final answer
   x = 5,107.60