Finding the Fourth Proportional to 23,059.37, 31,821.59 and 12,987.92

Step by Step Solution

1. Step 1: Write the proportion equation
   23,059.37 : 31,821.59 = 12,987.92 : x
2. Step 2: Convert to fraction form
   23,059.37/31,821.59 = 12,987.92/x
3. Step 3: Cross multiply
   23,059.37x = 31,821.59 × 12,987.92
4. Step 4: Simplify right side
   23,059.37x = 413,296,138.55
5. Step 5: Solve for x
   x = 413,296,138.55/23,059.37
6. Step 6: Final answer
   x = 17,923.14