Finding the Fourth Proportional to 13,365.57, 18,445.41 and 7,397.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,365.57 : 18,445.41 = 7,397.49 : x
2. Step 2: Convert to fraction form
   13,365.57/18,445.41 = 7,397.49/x
3. Step 3: Cross multiply
   13,365.57x = 18,445.41 × 7,397.49
4. Step 4: Simplify right side
   13,365.57x = 136,449,736.02
5. Step 5: Solve for x
   x = 136,449,736.02/13,365.57
6. Step 6: Final answer
   x = 10,209.05