Finding the Fourth Proportional to 11,720.69, 17,568.42 and 5,789.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,720.69 : 17,568.42 = 5,789.36 : x
2. Step 2: Convert to fraction form
   11,720.69/17,568.42 = 5,789.36/x
3. Step 3: Cross multiply
   11,720.69x = 17,568.42 × 5,789.36
4. Step 4: Simplify right side
   11,720.69x = 101,709,820.17
5. Step 5: Solve for x
   x = 101,709,820.17/11,720.69
6. Step 6: Final answer
   x = 8,677.81