Finding the Fourth Proportional to 12,477.70, 17,222.12 and 7,175.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.70 : 17,222.12 = 7,175.58 : x
2. Step 2: Convert to fraction form
   12,477.70/17,222.12 = 7,175.58/x
3. Step 3: Cross multiply
   12,477.70x = 17,222.12 × 7,175.58
4. Step 4: Simplify right side
   12,477.70x = 123,578,699.83
5. Step 5: Solve for x
   x = 123,578,699.83/12,477.70
6. Step 6: Final answer
   x = 9,903.96