Finding the Fourth Proportional to 12,473.61, 17,216.54 and 7,171.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,473.61 : 17,216.54 = 7,171.51 : x
2. Step 2: Convert to fraction form
   12,473.61/17,216.54 = 7,171.51/x
3. Step 3: Cross multiply
   12,473.61x = 17,216.54 × 7,171.51
4. Step 4: Simplify right side
   12,473.61x = 123,468,588.78
5. Step 5: Solve for x
   x = 123,468,588.78/12,473.61
6. Step 6: Final answer
   x = 9,898.38