Finding the Fourth Proportional to 12,359.39, 17,057.16 and 7,054.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,359.39 : 17,057.16 = 7,054.97 : x
2. Step 2: Convert to fraction form
   12,359.39/17,057.16 = 7,054.97/x
3. Step 3: Cross multiply
   12,359.39x = 17,057.16 × 7,054.97
4. Step 4: Simplify right side
   12,359.39x = 120,337,666.80
5. Step 5: Solve for x
   x = 120,337,666.80/12,359.39
6. Step 6: Final answer
   x = 9,736.54