Finding the Fourth Proportional to 31,927.92, 44,025.30 and 21,858

Step by Step Solution

1. Step 1: Write the proportion equation
   31,927.92 : 44,025.30 = 21,858 : x
2. Step 2: Convert to fraction form
   31,927.92/44,025.30 = 21,858/x
3. Step 3: Cross multiply
   31,927.92x = 44,025.30 × 21,858
4. Step 4: Simplify right side
   31,927.92x = 962,305,007.40
5. Step 5: Solve for x
   x = 962,305,007.40/31,927.92
6. Step 6: Final answer
   x = 30,139.92