Finding the Fourth Proportional to 13,684.86, 18,885.15 and 7,397.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,684.86 : 18,885.15 = 7,397.24 : x
2. Step 2: Convert to fraction form
   13,684.86/18,885.15 = 7,397.24/x
3. Step 3: Cross multiply
   13,684.86x = 18,885.15 × 7,397.24
4. Step 4: Simplify right side
   13,684.86x = 139,697,892.56
5. Step 5: Solve for x
   x = 139,697,892.56/13,684.86
6. Step 6: Final answer
   x = 10,208.21