Finding the Fourth Proportional to 10,066.59, 13,891.91 and 5,590.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,066.59 : 13,891.91 = 5,590.35 : x
2. Step 2: Convert to fraction form
   10,066.59/13,891.91 = 5,590.35/x
3. Step 3: Cross multiply
   10,066.59x = 13,891.91 × 5,590.35
4. Step 4: Simplify right side
   10,066.59x = 77,660,611.12
5. Step 5: Solve for x
   x = 77,660,611.12/10,066.59
6. Step 6: Final answer
   x = 7,714.69