Finding the Fourth Proportional to 12,380.86, 18,567.64 and 3,613.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.86 : 18,567.64 = 3,613.02 : x
2. Step 2: Convert to fraction form
   12,380.86/18,567.64 = 3,613.02/x
3. Step 3: Cross multiply
   12,380.86x = 18,567.64 × 3,613.02
4. Step 4: Simplify right side
   12,380.86x = 67,085,254.67
5. Step 5: Solve for x
   x = 67,085,254.67/12,380.86
6. Step 6: Final answer
   x = 5,418.46