Finding the Fourth Proportional to 20,722.88, 31,100.69 and 9,044.30

Step by Step Solution

1. Step 1: Write the proportion equation
   20,722.88 : 31,100.69 = 9,044.30 : x
2. Step 2: Convert to fraction form
   20,722.88/31,100.69 = 9,044.30/x
3. Step 3: Cross multiply
   20,722.88x = 31,100.69 × 9,044.30
4. Step 4: Simplify right side
   20,722.88x = 281,283,837.67
5. Step 5: Solve for x
   x = 281,283,837.67/20,722.88
6. Step 6: Final answer
   x = 13,573.59