Finding the Fourth Proportional to 12,418.89, 17,132.05 and 7,379.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,418.89 : 17,132.05 = 7,379.54 : x
2. Step 2: Convert to fraction form
   12,418.89/17,132.05 = 7,379.54/x
3. Step 3: Cross multiply
   12,418.89x = 17,132.05 × 7,379.54
4. Step 4: Simplify right side
   12,418.89x = 126,426,672.64
5. Step 5: Solve for x
   x = 126,426,672.64/12,418.89
6. Step 6: Final answer
   x = 10,180.19