Finding the Fourth Proportional to 22,004.22, 33,002.61 and 7,212.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,004.22 : 33,002.61 = 7,212.78 : x
2. Step 2: Convert to fraction form
   22,004.22/33,002.61 = 7,212.78/x
3. Step 3: Cross multiply
   22,004.22x = 33,002.61 × 7,212.78
4. Step 4: Simplify right side
   22,004.22x = 238,040,565.36
5. Step 5: Solve for x
   x = 238,040,565.36/22,004.22
6. Step 6: Final answer
   x = 10,817.95