Finding the Fourth Proportional to 11,710.98, 17,567.61 and 3,390.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,710.98 : 17,567.61 = 3,390.81 : x
2. Step 2: Convert to fraction form
   11,710.98/17,567.61 = 3,390.81/x
3. Step 3: Cross multiply
   11,710.98x = 17,567.61 × 3,390.81
4. Step 4: Simplify right side
   11,710.98x = 59,568,427.66
5. Step 5: Solve for x
   x = 59,568,427.66/11,710.98
6. Step 6: Final answer
   x = 5,086.55