Finding the Fourth Proportional to 16,212.84, 22,372.38 and 9,141

Step by Step Solution

1. Step 1: Write the proportion equation
   16,212.84 : 22,372.38 = 9,141 : x
2. Step 2: Convert to fraction form
   16,212.84/22,372.38 = 9,141/x
3. Step 3: Cross multiply
   16,212.84x = 22,372.38 × 9,141
4. Step 4: Simplify right side
   16,212.84x = 204,505,925.58
5. Step 5: Solve for x
   x = 204,505,925.58/16,212.84
6. Step 6: Final answer
   x = 12,613.82