Finding the Fourth Proportional to 23,781.94, 32,819.81 and 13,172.56

Step by Step Solution

1. Step 1: Write the proportion equation
   23,781.94 : 32,819.81 = 13,172.56 : x
2. Step 2: Convert to fraction form
   23,781.94/32,819.81 = 13,172.56/x
3. Step 3: Cross multiply
   23,781.94x = 32,819.81 × 13,172.56
4. Step 4: Simplify right side
   23,781.94x = 432,320,768.50
5. Step 5: Solve for x
   x = 432,320,768.50/23,781.94
6. Step 6: Final answer
   x = 18,178.53