Finding the Fourth Proportional to 21,933, 32,895.86 and 7,890.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,933 : 32,895.86 = 7,890.18 : x
2. Step 2: Convert to fraction form
   21,933/32,895.86 = 7,890.18/x
3. Step 3: Cross multiply
   21,933x = 32,895.86 × 7,890.18
4. Step 4: Simplify right side
   21,933x = 259,554,256.65
5. Step 5: Solve for x
   x = 259,554,256.65/21,933
6. Step 6: Final answer
   x = 11,833.96