Finding the Fourth Proportional to 17,018.67, 25,519.37 and 7,776.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,018.67 : 25,519.37 = 7,776.75 : x
2. Step 2: Convert to fraction form
   17,018.67/25,519.37 = 7,776.75/x
3. Step 3: Cross multiply
   17,018.67x = 25,519.37 × 7,776.75
4. Step 4: Simplify right side
   17,018.67x = 198,457,721.76
5. Step 5: Solve for x
   x = 198,457,721.76/17,018.67
6. Step 6: Final answer
   x = 11,661.18