Finding the Fourth Proportional to 22,661.42, 31,271.22 and 12,589.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,661.42 : 31,271.22 = 12,589.88 : x
2. Step 2: Convert to fraction form
   22,661.42/31,271.22 = 12,589.88/x
3. Step 3: Cross multiply
   22,661.42x = 31,271.22 × 12,589.88
4. Step 4: Simplify right side
   22,661.42x = 393,700,907.25
5. Step 5: Solve for x
   x = 393,700,907.25/22,661.42
6. Step 6: Final answer
   x = 17,373.18