Finding the Fourth Proportional to 22,454.72, 30,991.61 and 13,023.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,454.72 : 30,991.61 = 13,023.28 : x
2. Step 2: Convert to fraction form
   22,454.72/30,991.61 = 13,023.28/x
3. Step 3: Cross multiply
   22,454.72x = 30,991.61 × 13,023.28
4. Step 4: Simplify right side
   22,454.72x = 403,612,485.98
5. Step 5: Solve for x
   x = 403,612,485.98/22,454.72
6. Step 6: Final answer
   x = 17,974.51