Finding the Fourth Proportional to 10,066.88, 13,891.60 and 5,590.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,066.88 : 13,891.60 = 5,590.37 : x
2. Step 2: Convert to fraction form
   10,066.88/13,891.60 = 5,590.37/x
3. Step 3: Cross multiply
   10,066.88x = 13,891.60 × 5,590.37
4. Step 4: Simplify right side
   10,066.88x = 77,659,183.89
5. Step 5: Solve for x
   x = 77,659,183.89/10,066.88
6. Step 6: Final answer
   x = 7,714.32