Finding the Fourth Proportional to 22,920.50, 31,623.18 and 12,847.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,920.50 : 31,623.18 = 12,847.54 : x
2. Step 2: Convert to fraction form
   22,920.50/31,623.18 = 12,847.54/x
3. Step 3: Cross multiply
   22,920.50x = 31,623.18 × 12,847.54
4. Step 4: Simplify right side
   22,920.50x = 406,280,069.98
5. Step 5: Solve for x
   x = 406,280,069.98/22,920.50
6. Step 6: Final answer
   x = 17,725.62