Finding the Fourth Proportional to 12,477.24, 17,218.59 and 7,173.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.24 : 17,218.59 = 7,173.09 : x
2. Step 2: Convert to fraction form
   12,477.24/17,218.59 = 7,173.09/x
3. Step 3: Cross multiply
   12,477.24x = 17,218.59 × 7,173.09
4. Step 4: Simplify right side
   12,477.24x = 123,510,495.74
5. Step 5: Solve for x
   x = 123,510,495.74/12,477.24
6. Step 6: Final answer
   x = 9,898.86