Finding the Fourth Proportional to 22,915.58, 31,620.69 and 13,959.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,915.58 : 31,620.69 = 13,959.83 : x
2. Step 2: Convert to fraction form
   22,915.58/31,620.69 = 13,959.83/x
3. Step 3: Cross multiply
   22,915.58x = 31,620.69 × 13,959.83
4. Step 4: Simplify right side
   22,915.58x = 441,419,456.88
5. Step 5: Solve for x
   x = 441,419,456.88/22,915.58
6. Step 6: Final answer
   x = 19,262.85