Finding the Fourth Proportional to 12,404.12, 18,605.94 and 3,638.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.12 : 18,605.94 = 3,638.84 : x
2. Step 2: Convert to fraction form
   12,404.12/18,605.94 = 3,638.84/x
3. Step 3: Cross multiply
   12,404.12x = 18,605.94 × 3,638.84
4. Step 4: Simplify right side
   12,404.12x = 67,704,038.71
5. Step 5: Solve for x
   x = 67,704,038.71/12,404.12
6. Step 6: Final answer
   x = 5,458.19