Finding the Fourth Proportional to 10,067.90, 13,894.31 and 5,591.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,067.90 : 13,894.31 = 5,591.68 : x
2. Step 2: Convert to fraction form
   10,067.90/13,894.31 = 5,591.68/x
3. Step 3: Cross multiply
   10,067.90x = 13,894.31 × 5,591.68
4. Step 4: Simplify right side
   10,067.90x = 77,692,514.58
5. Step 5: Solve for x
   x = 77,692,514.58/10,067.90
6. Step 6: Final answer
   x = 7,716.86