Finding the Fourth Proportional to 23,643.27, 32,627.28 and 12,888.25

Step by Step Solution

1. Step 1: Write the proportion equation
   23,643.27 : 32,627.28 = 12,888.25 : x
2. Step 2: Convert to fraction form
   23,643.27/32,627.28 = 12,888.25/x
3. Step 3: Cross multiply
   23,643.27x = 32,627.28 × 12,888.25
4. Step 4: Simplify right side
   23,643.27x = 420,508,541.46
5. Step 5: Solve for x
   x = 420,508,541.46/23,643.27
6. Step 6: Final answer
   x = 17,785.55