Finding the Fourth Proportional to 21,111.01, 31,661.77 and 6,318.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,111.01 : 31,661.77 = 6,318.03 : x
2. Step 2: Convert to fraction form
   21,111.01/31,661.77 = 6,318.03/x
3. Step 3: Cross multiply
   21,111.01x = 31,661.77 × 6,318.03
4. Step 4: Simplify right side
   21,111.01x = 200,040,012.71
5. Step 5: Solve for x
   x = 200,040,012.71/21,111.01
6. Step 6: Final answer
   x = 9,475.62