Finding the Fourth Proportional to 23,782.50, 32,820.89 and 13,172.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,782.50 : 32,820.89 = 13,172.18 : x
2. Step 2: Convert to fraction form
   23,782.50/32,820.89 = 13,172.18/x
3. Step 3: Cross multiply
   23,782.50x = 32,820.89 × 13,172.18
4. Step 4: Simplify right side
   23,782.50x = 432,322,440.87
5. Step 5: Solve for x
   x = 432,322,440.87/23,782.50
6. Step 6: Final answer
   x = 18,178.17