Finding the Fourth Proportional to 22,452.27, 30,987 and 13,020.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,452.27 : 30,987 = 13,020.63 : x
2. Step 2: Convert to fraction form
   22,452.27/30,987 = 13,020.63/x
3. Step 3: Cross multiply
   22,452.27x = 30,987 × 13,020.63
4. Step 4: Simplify right side
   22,452.27x = 403,470,261.81
5. Step 5: Solve for x
   x = 403,470,261.81/22,452.27
6. Step 6: Final answer
   x = 17,970.13