Finding the Fourth Proportional to 22,128.16, 33,187.48 and 7,333.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.16 : 33,187.48 = 7,333.72 : x
2. Step 2: Convert to fraction form
   22,128.16/33,187.48 = 7,333.72/x
3. Step 3: Cross multiply
   22,128.16x = 33,187.48 × 7,333.72
4. Step 4: Simplify right side
   22,128.16x = 243,387,685.83
5. Step 5: Solve for x
   x = 243,387,685.83/22,128.16
6. Step 6: Final answer
   x = 10,999.00