Finding the Fourth Proportional to 23,538.24, 32,482.74 and 12,928.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,538.24 : 32,482.74 = 12,928.55 : x
2. Step 2: Convert to fraction form
   23,538.24/32,482.74 = 12,928.55/x
3. Step 3: Cross multiply
   23,538.24x = 32,482.74 × 12,928.55
4. Step 4: Simplify right side
   23,538.24x = 419,954,809.43
5. Step 5: Solve for x
   x = 419,954,809.43/23,538.24
6. Step 6: Final answer
   x = 17,841.39