Finding the Fourth Proportional to 12,475.17, 17,216.82 and 7,171.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,475.17 : 17,216.82 = 7,171.83 : x
2. Step 2: Convert to fraction form
   12,475.17/17,216.82 = 7,171.83/x
3. Step 3: Cross multiply
   12,475.17x = 17,216.82 × 7,171.83
4. Step 4: Simplify right side
   12,475.17x = 123,476,106.18
5. Step 5: Solve for x
   x = 123,476,106.18/12,475.17
6. Step 6: Final answer
   x = 9,897.75