Finding the Fourth Proportional to 23,597.58, 32,564.60 and 12,987.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,597.58 : 32,564.60 = 12,987.21 : x
2. Step 2: Convert to fraction form
   23,597.58/32,564.60 = 12,987.21/x
3. Step 3: Cross multiply
   23,597.58x = 32,564.60 × 12,987.21
4. Step 4: Simplify right side
   23,597.58x = 422,923,233.83
5. Step 5: Solve for x
   x = 422,923,233.83/23,597.58
6. Step 6: Final answer
   x = 17,922.31