Finding the Fourth Proportional to 31,899.27, 44,012.79 and 21,830.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,899.27 : 44,012.79 = 21,830.82 : x
2. Step 2: Convert to fraction form
   31,899.27/44,012.79 = 21,830.82/x
3. Step 3: Cross multiply
   31,899.27x = 44,012.79 × 21,830.82
4. Step 4: Simplify right side
   31,899.27x = 960,835,296.19
5. Step 5: Solve for x
   x = 960,835,296.19/31,899.27
6. Step 6: Final answer
   x = 30,120.92