Finding the Fourth Proportional to 12,453.94, 17,186.73 and 7,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.94 : 17,186.73 = 7,672.12 : x
2. Step 2: Convert to fraction form
   12,453.94/17,186.73 = 7,672.12/x
3. Step 3: Cross multiply
   12,453.94x = 17,186.73 × 7,672.12
4. Step 4: Simplify right side
   12,453.94x = 131,858,654.97
5. Step 5: Solve for x
   x = 131,858,654.97/12,453.94
6. Step 6: Final answer
   x = 10,587.71