Finding the Fourth Proportional to 10,136.44, 13,987.82 and 5,659.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,136.44 : 13,987.82 = 5,659.31 : x
2. Step 2: Convert to fraction form
   10,136.44/13,987.82 = 5,659.31/x
3. Step 3: Cross multiply
   10,136.44x = 13,987.82 × 5,659.31
4. Step 4: Simplify right side
   10,136.44x = 79,161,458.72
5. Step 5: Solve for x
   x = 79,161,458.72/10,136.44
6. Step 6: Final answer
   x = 7,809.59