Finding the Fourth Proportional to 12,372.50, 17,074.12 and 7,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,372.50 : 17,074.12 = 7,404.50 : x
2. Step 2: Convert to fraction form
   12,372.50/17,074.12 = 7,404.50/x
3. Step 3: Cross multiply
   12,372.50x = 17,074.12 × 7,404.50
4. Step 4: Simplify right side
   12,372.50x = 126,425,321.54
5. Step 5: Solve for x
   x = 126,425,321.54/12,372.50
6. Step 6: Final answer
   x = 10,218.25