Finding the Fourth Proportional to 22,018.16, 30,384.37 and 12,457.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,018.16 : 30,384.37 = 12,457.33 : x
2. Step 2: Convert to fraction form
   22,018.16/30,384.37 = 12,457.33/x
3. Step 3: Cross multiply
   22,018.16x = 30,384.37 × 12,457.33
4. Step 4: Simplify right side
   22,018.16x = 378,508,123.93
5. Step 5: Solve for x
   x = 378,508,123.93/22,018.16
6. Step 6: Final answer
   x = 17,190.72