Finding the Fourth Proportional to 13,367.86, 18,447.37 and 7,399.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,367.86 : 18,447.37 = 7,399.18 : x
2. Step 2: Convert to fraction form
   13,367.86/18,447.37 = 7,399.18/x
3. Step 3: Cross multiply
   13,367.86x = 18,447.37 × 7,399.18
4. Step 4: Simplify right side
   13,367.86x = 136,495,411.16
5. Step 5: Solve for x
   x = 136,495,411.16/13,367.86
6. Step 6: Final answer
   x = 10,210.72