Finding the Fourth Proportional to 24,621, 33,977.70 and 13,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   24,621 : 33,977.70 = 13,443.72 : x
2. Step 2: Convert to fraction form
   24,621/33,977.70 = 13,443.72/x
3. Step 3: Cross multiply
   24,621x = 33,977.70 × 13,443.72
4. Step 4: Simplify right side
   24,621x = 456,786,685.04
5. Step 5: Solve for x
   x = 456,786,685.04/24,621
6. Step 6: Final answer
   x = 18,552.73