Finding the Fourth Proportional to 22,200.89, 30,637.24 and 12,129.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,200.89 : 30,637.24 = 12,129.48 : x
2. Step 2: Convert to fraction form
   22,200.89/30,637.24 = 12,129.48/x
3. Step 3: Cross multiply
   22,200.89x = 30,637.24 × 12,129.48
4. Step 4: Simplify right side
   22,200.89x = 371,613,759.51
5. Step 5: Solve for x
   x = 371,613,759.51/22,200.89
6. Step 6: Final answer
   x = 16,738.69