Finding the Fourth Proportional to 13,348.74, 18,419.76 and 7,379.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,348.74 : 18,419.76 = 7,379.58 : x
2. Step 2: Convert to fraction form
   13,348.74/18,419.76 = 7,379.58/x
3. Step 3: Cross multiply
   13,348.74x = 18,419.76 × 7,379.58
4. Step 4: Simplify right side
   13,348.74x = 135,930,092.50
5. Step 5: Solve for x
   x = 135,930,092.50/13,348.74
6. Step 6: Final answer
   x = 10,182.99