Finding the Fourth Proportional to 22,234.42, 30,686.61 and 12,802.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,234.42 : 30,686.61 = 12,802.78 : x
2. Step 2: Convert to fraction form
   22,234.42/30,686.61 = 12,802.78/x
3. Step 3: Cross multiply
   22,234.42x = 30,686.61 × 12,802.78
4. Step 4: Simplify right side
   22,234.42x = 392,873,916.78
5. Step 5: Solve for x
   x = 392,873,916.78/22,234.42
6. Step 6: Final answer
   x = 17,669.63