Finding the Fourth Proportional to 12,476.15, 17,217.74 and 7,171.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,476.15 : 17,217.74 = 7,171.46 : x
2. Step 2: Convert to fraction form
   12,476.15/17,217.74 = 7,171.46/x
3. Step 3: Cross multiply
   12,476.15x = 17,217.74 × 7,171.46
4. Step 4: Simplify right side
   12,476.15x = 123,476,333.70
5. Step 5: Solve for x
   x = 123,476,333.70/12,476.15
6. Step 6: Final answer
   x = 9,896.99