Finding the Fourth Proportional to 12,472.65, 17,212.91 and 7,167.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472.65 : 17,212.91 = 7,167.96 : x
2. Step 2: Convert to fraction form
   12,472.65/17,212.91 = 7,167.96/x
3. Step 3: Cross multiply
   12,472.65x = 17,212.91 × 7,167.96
4. Step 4: Simplify right side
   12,472.65x = 123,381,414.52
5. Step 5: Solve for x
   x = 123,381,414.52/12,472.65
6. Step 6: Final answer
   x = 9,892.16