Finding the Fourth Proportional to 16,128.56, 22,256.22 and 9,056.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.56 : 22,256.22 = 9,056.06 : x
2. Step 2: Convert to fraction form
   16,128.56/22,256.22 = 9,056.06/x
3. Step 3: Cross multiply
   16,128.56x = 22,256.22 × 9,056.06
4. Step 4: Simplify right side
   16,128.56x = 201,553,663.69
5. Step 5: Solve for x
   x = 201,553,663.69/16,128.56
6. Step 6: Final answer
   x = 12,496.69