Finding the Fourth Proportional to 22,289.30, 30,757.93 and 12,215.74

Step by Step Solution

1. Step 1: Write the proportion equation
   22,289.30 : 30,757.93 = 12,215.74 : x
2. Step 2: Convert to fraction form
   22,289.30/30,757.93 = 12,215.74/x
3. Step 3: Cross multiply
   22,289.30x = 30,757.93 × 12,215.74
4. Step 4: Simplify right side
   22,289.30x = 375,730,875.82
5. Step 5: Solve for x
   x = 375,730,875.82/22,289.30
6. Step 6: Final answer
   x = 16,857.01