Finding the Fourth Proportional to 12,472.46, 17,212.04 and 7,166.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472.46 : 17,212.04 = 7,166.94 : x
2. Step 2: Convert to fraction form
   12,472.46/17,212.04 = 7,166.94/x
3. Step 3: Cross multiply
   12,472.46x = 17,212.04 × 7,166.94
4. Step 4: Simplify right side
   12,472.46x = 123,357,622.12
5. Step 5: Solve for x
   x = 123,357,622.12/12,472.46
6. Step 6: Final answer
   x = 9,890.40