Finding the Fourth Proportional to 22,335.71, 30,825.72 and 12,776.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,335.71 : 30,825.72 = 12,776.47 : x
2. Step 2: Convert to fraction form
   22,335.71/30,825.72 = 12,776.47/x
3. Step 3: Cross multiply
   22,335.71x = 30,825.72 × 12,776.47
4. Step 4: Simplify right side
   22,335.71x = 393,843,809.74
5. Step 5: Solve for x
   x = 393,843,809.74/22,335.71
6. Step 6: Final answer
   x = 17,632.92