Finding the Fourth Proportional to 22,443.34, 30,971.73 and 13,017.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.34 : 30,971.73 = 13,017.28 : x
2. Step 2: Convert to fraction form
   22,443.34/30,971.73 = 13,017.28/x
3. Step 3: Cross multiply
   22,443.34x = 30,971.73 × 13,017.28
4. Step 4: Simplify right side
   22,443.34x = 403,167,681.49
5. Step 5: Solve for x
   x = 403,167,681.49/22,443.34
6. Step 6: Final answer
   x = 17,963.80