Finding the Fourth Proportional to 16,215.64, 22,374.42 and 9,923.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.64 : 22,374.42 = 9,923.56 : x
2. Step 2: Convert to fraction form
   16,215.64/22,374.42 = 9,923.56/x
3. Step 3: Cross multiply
   16,215.64x = 22,374.42 × 9,923.56
4. Step 4: Simplify right side
   16,215.64x = 222,033,899.34
5. Step 5: Solve for x
   x = 222,033,899.34/16,215.64
6. Step 6: Final answer
   x = 13,692.58