Finding the Fourth Proportional to 23,967.72, 33,075 and 13,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,967.72 : 33,075 = 13,356.72 : x
2. Step 2: Convert to fraction form
   23,967.72/33,075 = 13,356.72/x
3. Step 3: Cross multiply
   23,967.72x = 33,075 × 13,356.72
4. Step 4: Simplify right side
   23,967.72x = 441,773,514
5. Step 5: Solve for x
   x = 441,773,514/23,967.72
6. Step 6: Final answer
   x = 18,432.02