Finding the Fourth Proportional to 22,546.68, 31,116.72 and 12,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,546.68 : 31,116.72 = 12,986.88 : x
2. Step 2: Convert to fraction form
   22,546.68/31,116.72 = 12,986.88/x
3. Step 3: Cross multiply
   22,546.68x = 31,116.72 × 12,986.88
4. Step 4: Simplify right side
   22,546.68x = 404,109,108.63
5. Step 5: Solve for x
   x = 404,109,108.63/22,546.68
6. Step 6: Final answer
   x = 17,923.22