Finding the Fourth Proportional to 11,747.57, 17,610.55 and 5,079.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,747.57 : 17,610.55 = 5,079.89 : x
2. Step 2: Convert to fraction form
   11,747.57/17,610.55 = 5,079.89/x
3. Step 3: Cross multiply
   11,747.57x = 17,610.55 × 5,079.89
4. Step 4: Simplify right side
   11,747.57x = 89,459,688.17
5. Step 5: Solve for x
   x = 89,459,688.17/11,747.57
6. Step 6: Final answer
   x = 7,615.17