Finding the Fourth Proportional to 21,085.38, 31,633.55 and 6,294.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085.38 : 31,633.55 = 6,294.30 : x
2. Step 2: Convert to fraction form
   21,085.38/31,633.55 = 6,294.30/x
3. Step 3: Cross multiply
   21,085.38x = 31,633.55 × 6,294.30
4. Step 4: Simplify right side
   21,085.38x = 199,111,053.77
5. Step 5: Solve for x
   x = 199,111,053.77/21,085.38
6. Step 6: Final answer
   x = 9,443.09