Finding the Fourth Proportional to 21,993.33, 32,984.94 and 13,111.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,993.33 : 32,984.94 = 13,111.17 : x
2. Step 2: Convert to fraction form
   21,993.33/32,984.94 = 13,111.17/x
3. Step 3: Cross multiply
   21,993.33x = 32,984.94 × 13,111.17
4. Step 4: Simplify right side
   21,993.33x = 432,471,155.78
5. Step 5: Solve for x
   x = 432,471,155.78/21,993.33
6. Step 6: Final answer
   x = 19,663.74