Finding the Fourth Proportional to 16,128.39, 22,259.48 and 9,055.29

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.39 : 22,259.48 = 9,055.29 : x
2. Step 2: Convert to fraction form
   16,128.39/22,259.48 = 9,055.29/x
3. Step 3: Cross multiply
   16,128.39x = 22,259.48 × 9,055.29
4. Step 4: Simplify right side
   16,128.39x = 201,566,001.37
5. Step 5: Solve for x
   x = 201,566,001.37/16,128.39
6. Step 6: Final answer
   x = 12,497.59