Finding the Fourth Proportional to 22,007.10, 33,003.72 and 7,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,007.10 : 33,003.72 = 7,212.72 : x
2. Step 2: Convert to fraction form
   22,007.10/33,003.72 = 7,212.72/x
3. Step 3: Cross multiply
   22,007.10x = 33,003.72 × 7,212.72
4. Step 4: Simplify right side
   22,007.10x = 238,046,591.32
5. Step 5: Solve for x
   x = 238,046,591.32/22,007.10
6. Step 6: Final answer
   x = 10,816.81