Finding the Fourth Proportional to 22,242.72, 30,701.52 and 12,817.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,242.72 : 30,701.52 = 12,817.92 : x
2. Step 2: Convert to fraction form
   22,242.72/30,701.52 = 12,817.92/x
3. Step 3: Cross multiply
   22,242.72x = 30,701.52 × 12,817.92
4. Step 4: Simplify right side
   22,242.72x = 393,529,627.24
5. Step 5: Solve for x
   x = 393,529,627.24/22,242.72
6. Step 6: Final answer
   x = 17,692.51