Finding the Fourth Proportional to 31,797.92, 47,718.56 and 21,279.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,797.92 : 47,718.56 = 21,279.84 : x
2. Step 2: Convert to fraction form
   31,797.92/47,718.56 = 21,279.84/x
3. Step 3: Cross multiply
   31,797.92x = 47,718.56 × 21,279.84
4. Step 4: Simplify right side
   31,797.92x = 1,015,443,321.83
5. Step 5: Solve for x
   x = 1,015,443,321.83/31,797.92
6. Step 6: Final answer
   x = 31,934.27