Finding the Fourth Proportional to 21,994.78, 32,967.42 and 10,909.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,994.78 : 32,967.42 = 10,909.43 : x
2. Step 2: Convert to fraction form
   21,994.78/32,967.42 = 10,909.43/x
3. Step 3: Cross multiply
   21,994.78x = 32,967.42 × 10,909.43
4. Step 4: Simplify right side
   21,994.78x = 359,655,760.77
5. Step 5: Solve for x
   x = 359,655,760.77/21,994.78
6. Step 6: Final answer
   x = 16,351.87