Finding the Fourth Proportional to 22,342.72, 30,833.60 and 12,784.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,342.72 : 30,833.60 = 12,784.16 : x
2. Step 2: Convert to fraction form
   22,342.72/30,833.60 = 12,784.16/x
3. Step 3: Cross multiply
   22,342.72x = 30,833.60 × 12,784.16
4. Step 4: Simplify right side
   22,342.72x = 394,181,675.78
5. Step 5: Solve for x
   x = 394,181,675.78/22,342.72
6. Step 6: Final answer
   x = 17,642.51