Finding the Fourth Proportional to 21,188.01, 31,761.33 and 10,091.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,188.01 : 31,761.33 = 10,091.73 : x
2. Step 2: Convert to fraction form
   21,188.01/31,761.33 = 10,091.73/x
3. Step 3: Cross multiply
   21,188.01x = 31,761.33 × 10,091.73
4. Step 4: Simplify right side
   21,188.01x = 320,526,766.80
5. Step 5: Solve for x
   x = 320,526,766.80/21,188.01
6. Step 6: Final answer
   x = 15,127.74