Finding the Fourth Proportional to 22,315.34, 30,796.53 and 12,884.51

Step by Step Solution

1. Step 1: Write the proportion equation
   22,315.34 : 30,796.53 = 12,884.51 : x
2. Step 2: Convert to fraction form
   22,315.34/30,796.53 = 12,884.51/x
3. Step 3: Cross multiply
   22,315.34x = 30,796.53 × 12,884.51
4. Step 4: Simplify right side
   22,315.34x = 396,798,198.75
5. Step 5: Solve for x
   x = 396,798,198.75/22,315.34
6. Step 6: Final answer
   x = 17,781.41