Finding the Fourth Proportional to 12,381.73, 18,575.63 and 3,616.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,381.73 : 18,575.63 = 3,616.58 : x
2. Step 2: Convert to fraction form
   12,381.73/18,575.63 = 3,616.58/x
3. Step 3: Cross multiply
   12,381.73x = 18,575.63 × 3,616.58
4. Step 4: Simplify right side
   12,381.73x = 67,180,293.86
5. Step 5: Solve for x
   x = 67,180,293.86/12,381.73
6. Step 6: Final answer
   x = 5,425.76