Finding the Fourth Proportional to 10,067.79, 13,893.48 and 5,591.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,067.79 : 13,893.48 = 5,591.57 : x
2. Step 2: Convert to fraction form
   10,067.79/13,893.48 = 5,591.57/x
3. Step 3: Cross multiply
   10,067.79x = 13,893.48 × 5,591.57
4. Step 4: Simplify right side
   10,067.79x = 77,686,296.50
5. Step 5: Solve for x
   x = 77,686,296.50/10,067.79
6. Step 6: Final answer
   x = 7,716.32