Finding the Fourth Proportional to 13,556.88, 18,708.59 and 7,589.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,556.88 : 18,708.59 = 7,589.10 : x
2. Step 2: Convert to fraction form
   13,556.88/18,708.59 = 7,589.10/x
3. Step 3: Cross multiply
   13,556.88x = 18,708.59 × 7,589.10
4. Step 4: Simplify right side
   13,556.88x = 141,981,360.37
5. Step 5: Solve for x
   x = 141,981,360.37/13,556.88
6. Step 6: Final answer
   x = 10,473.01