Finding the Fourth Proportional to 22,920.36, 31,632.72 and 12,851.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,920.36 : 31,632.72 = 12,851.52 : x
2. Step 2: Convert to fraction form
   22,920.36/31,632.72 = 12,851.52/x
3. Step 3: Cross multiply
   22,920.36x = 31,632.72 × 12,851.52
4. Step 4: Simplify right side
   22,920.36x = 406,528,533.73
5. Step 5: Solve for x
   x = 406,528,533.73/22,920.36
6. Step 6: Final answer
   x = 17,736.57