Finding the Fourth Proportional to 11,701.89, 17,555.27 and 3,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,701.89 : 17,555.27 = 3,910.50 : x
2. Step 2: Convert to fraction form
   11,701.89/17,555.27 = 3,910.50/x
3. Step 3: Cross multiply
   11,701.89x = 17,555.27 × 3,910.50
4. Step 4: Simplify right side
   11,701.89x = 68,649,863.78
5. Step 5: Solve for x
   x = 68,649,863.78/11,701.89
6. Step 6: Final answer
   x = 5,866.56