Finding the Fourth Proportional to 23,643.12, 32,627.05 and 12,888.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,643.12 : 32,627.05 = 12,888.09 : x
2. Step 2: Convert to fraction form
   23,643.12/32,627.05 = 12,888.09/x
3. Step 3: Cross multiply
   23,643.12x = 32,627.05 × 12,888.09
4. Step 4: Simplify right side
   23,643.12x = 420,500,356.83
5. Step 5: Solve for x
   x = 420,500,356.83/23,643.12
6. Step 6: Final answer
   x = 17,785.32