Finding the Fourth Proportional to 23,338.95, 32,208.18 and 12,728.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,338.95 : 32,208.18 = 12,728.55 : x
2. Step 2: Convert to fraction form
   23,338.95/32,208.18 = 12,728.55/x
3. Step 3: Cross multiply
   23,338.95x = 32,208.18 × 12,728.55
4. Step 4: Simplify right side
   23,338.95x = 409,963,429.54
5. Step 5: Solve for x
   x = 409,963,429.54/23,338.95
6. Step 6: Final answer
   x = 17,565.63