Finding the Fourth Proportional to 21,605.27, 32,407.56 and 13,174.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,605.27 : 32,407.56 = 13,174.25 : x
2. Step 2: Convert to fraction form
   21,605.27/32,407.56 = 13,174.25/x
3. Step 3: Cross multiply
   21,605.27x = 32,407.56 × 13,174.25
4. Step 4: Simplify right side
   21,605.27x = 426,945,297.33
5. Step 5: Solve for x
   x = 426,945,297.33/21,605.27
6. Step 6: Final answer
   x = 19,761.16