Finding the Fourth Proportional to 13,372.82, 18,454.50 and 7,404.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,372.82 : 18,454.50 = 7,404.49 : x
2. Step 2: Convert to fraction form
   13,372.82/18,454.50 = 7,404.49/x
3. Step 3: Cross multiply
   13,372.82x = 18,454.50 × 7,404.49
4. Step 4: Simplify right side
   13,372.82x = 136,646,152.54
5. Step 5: Solve for x
   x = 136,646,152.54/13,372.82
6. Step 6: Final answer
   x = 10,218.20