Finding the Fourth Proportional to 16,221.34, 22,395 and 10,642.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,221.34 : 22,395 = 10,642.06 : x
2. Step 2: Convert to fraction form
   16,221.34/22,395 = 10,642.06/x
3. Step 3: Cross multiply
   16,221.34x = 22,395 × 10,642.06
4. Step 4: Simplify right side
   16,221.34x = 238,328,933.70
5. Step 5: Solve for x
   x = 238,328,933.70/16,221.34
6. Step 6: Final answer
   x = 14,692.31