Finding the Fourth Proportional to 11,982.72, 17,986.86 and 10,604.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,982.72 : 17,986.86 = 10,604.82 : x
2. Step 2: Convert to fraction form
   11,982.72/17,986.86 = 10,604.82/x
3. Step 3: Cross multiply
   11,982.72x = 17,986.86 × 10,604.82
4. Step 4: Simplify right side
   11,982.72x = 190,747,412.67
5. Step 5: Solve for x
   x = 190,747,412.67/11,982.72
6. Step 6: Final answer
   x = 15,918.54