Finding the Fourth Proportional to 21,827.72, 30,117.00 and 12,747.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,827.72 : 30,117.00 = 12,747.93 : x
2. Step 2: Convert to fraction form
   21,827.72/30,117.00 = 12,747.93/x
3. Step 3: Cross multiply
   21,827.72x = 30,117.00 × 12,747.93
4. Step 4: Simplify right side
   21,827.72x = 383,929,440.38
5. Step 5: Solve for x
   x = 383,929,440.38/21,827.72
6. Step 6: Final answer
   x = 17,589.08