Finding the Fourth Proportional to 12,400.29, 18,603.27 and 3,635.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,400.29 : 18,603.27 = 3,635.87 : x
2. Step 2: Convert to fraction form
   12,400.29/18,603.27 = 3,635.87/x
3. Step 3: Cross multiply
   12,400.29x = 18,603.27 × 3,635.87
4. Step 4: Simplify right side
   12,400.29x = 67,638,978.28
5. Step 5: Solve for x
   x = 67,638,978.28/12,400.29
6. Step 6: Final answer
   x = 5,454.63