Finding the Fourth Proportional to 22,215.50, 30,657.32 and 12,143.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,215.50 : 30,657.32 = 12,143.94 : x
2. Step 2: Convert to fraction form
   22,215.50/30,657.32 = 12,143.94/x
3. Step 3: Cross multiply
   22,215.50x = 30,657.32 × 12,143.94
4. Step 4: Simplify right side
   22,215.50x = 372,300,696.94
5. Step 5: Solve for x
   x = 372,300,696.94/22,215.50
6. Step 6: Final answer
   x = 16,758.60