Finding the Fourth Proportional to 12,417.45, 17,134.79 and 7,112.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.45 : 17,134.79 = 7,112.49 : x
2. Step 2: Convert to fraction form
   12,417.45/17,134.79 = 7,112.49/x
3. Step 3: Cross multiply
   12,417.45x = 17,134.79 × 7,112.49
4. Step 4: Simplify right side
   12,417.45x = 121,870,986.96
5. Step 5: Solve for x
   x = 121,870,986.96/12,417.45
6. Step 6: Final answer
   x = 9,814.49