Finding the Fourth Proportional to 21,852.65, 30,156.37 and 12,291.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,852.65 : 30,156.37 = 12,291.82 : x
2. Step 2: Convert to fraction form
   21,852.65/30,156.37 = 12,291.82/x
3. Step 3: Cross multiply
   21,852.65x = 30,156.37 × 12,291.82
4. Step 4: Simplify right side
   21,852.65x = 370,676,565.77
5. Step 5: Solve for x
   x = 370,676,565.77/21,852.65
6. Step 6: Final answer
   x = 16,962.54