Finding the Fourth Proportional to 11,747.89, 17,609.55 and 7,305.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,747.89 : 17,609.55 = 7,305.58 : x
2. Step 2: Convert to fraction form
   11,747.89/17,609.55 = 7,305.58/x
3. Step 3: Cross multiply
   11,747.89x = 17,609.55 × 7,305.58
4. Step 4: Simplify right side
   11,747.89x = 128,647,976.29
5. Step 5: Solve for x
   x = 128,647,976.29/11,747.89
6. Step 6: Final answer
   x = 10,950.73