Finding the Fourth Proportional to 9,891.69, 13,648.82 and 5,699.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,891.69 : 13,648.82 = 5,699.13 : x
2. Step 2: Convert to fraction form
   9,891.69/13,648.82 = 5,699.13/x
3. Step 3: Cross multiply
   9,891.69x = 13,648.82 × 5,699.13
4. Step 4: Simplify right side
   9,891.69x = 77,786,371.03
5. Step 5: Solve for x
   x = 77,786,371.03/9,891.69
6. Step 6: Final answer
   x = 7,863.81