Finding the Fourth Proportional to 12,404.16, 18,603.36 and 3,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.16 : 18,603.36 = 3,636.72 : x
2. Step 2: Convert to fraction form
   12,404.16/18,603.36 = 3,636.72/x
3. Step 3: Cross multiply
   12,404.16x = 18,603.36 × 3,636.72
4. Step 4: Simplify right side
   12,404.16x = 67,655,211.38
5. Step 5: Solve for x
   x = 67,655,211.38/12,404.16
6. Step 6: Final answer
   x = 5,454.24