Finding the Fourth Proportional to 21,443.34, 32,184.62 and 10,920.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.34 : 32,184.62 = 10,920.63 : x
2. Step 2: Convert to fraction form
   21,443.34/32,184.62 = 10,920.63/x
3. Step 3: Cross multiply
   21,443.34x = 32,184.62 × 10,920.63
4. Step 4: Simplify right side
   21,443.34x = 351,476,326.71
5. Step 5: Solve for x
   x = 351,476,326.71/21,443.34
6. Step 6: Final answer
   x = 16,390.93