Finding the Fourth Proportional to 21,784.12, 30,062.94 and 12,354.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,784.12 : 30,062.94 = 12,354.52 : x
2. Step 2: Convert to fraction form
   21,784.12/30,062.94 = 12,354.52/x
3. Step 3: Cross multiply
   21,784.12x = 30,062.94 × 12,354.52
4. Step 4: Simplify right side
   21,784.12x = 371,413,193.49
5. Step 5: Solve for x
   x = 371,413,193.49/21,784.12
6. Step 6: Final answer
   x = 17,049.72