Finding the Fourth Proportional to 21,162.52, 29,196.75 and 12,212.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.52 : 29,196.75 = 12,212.29 : x
2. Step 2: Convert to fraction form
   21,162.52/29,196.75 = 12,212.29/x
3. Step 3: Cross multiply
   21,162.52x = 29,196.75 × 12,212.29
4. Step 4: Simplify right side
   21,162.52x = 356,559,178.06
5. Step 5: Solve for x
   x = 356,559,178.06/21,162.52
6. Step 6: Final answer
   x = 16,848.62