Finding the Fourth Proportional to 22,128.36, 30,536.78 and 12,056.93

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.36 : 30,536.78 = 12,056.93 : x
2. Step 2: Convert to fraction form
   22,128.36/30,536.78 = 12,056.93/x
3. Step 3: Cross multiply
   22,128.36x = 30,536.78 × 12,056.93
4. Step 4: Simplify right side
   22,128.36x = 368,179,818.89
5. Step 5: Solve for x
   x = 368,179,818.89/22,128.36
6. Step 6: Final answer
   x = 16,638.37