Finding the Fourth Proportional to 8,404.74, 12,589.38 and 4,017.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,404.74 : 12,589.38 = 4,017.78 : x
2. Step 2: Convert to fraction form
   8,404.74/12,589.38 = 4,017.78/x
3. Step 3: Cross multiply
   8,404.74x = 12,589.38 × 4,017.78
4. Step 4: Simplify right side
   8,404.74x = 50,581,359.18
5. Step 5: Solve for x
   x = 50,581,359.18/8,404.74
6. Step 6: Final answer
   x = 6,018.19