Finding the Fourth Proportional to 21,998.33, 33,013.89 and 8,850.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,998.33 : 33,013.89 = 8,850.81 : x
2. Step 2: Convert to fraction form
   21,998.33/33,013.89 = 8,850.81/x
3. Step 3: Cross multiply
   21,998.33x = 33,013.89 × 8,850.81
4. Step 4: Simplify right side
   21,998.33x = 292,199,667.75
5. Step 5: Solve for x
   x = 292,199,667.75/21,998.33
6. Step 6: Final answer
   x = 13,282.81