Finding the Fourth Proportional to 23,639.14, 32,621.59 and 12,884.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,639.14 : 32,621.59 = 12,884.12 : x
2. Step 2: Convert to fraction form
   23,639.14/32,621.59 = 12,884.12/x
3. Step 3: Cross multiply
   23,639.14x = 32,621.59 × 12,884.12
4. Step 4: Simplify right side
   23,639.14x = 420,300,480.15
5. Step 5: Solve for x
   x = 420,300,480.15/23,639.14
6. Step 6: Final answer
   x = 17,779.85