Finding the Fourth Proportional to 21,150.71, 29,191.03 and 12,196.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,150.71 : 29,191.03 = 12,196.43 : x
2. Step 2: Convert to fraction form
   21,150.71/29,191.03 = 12,196.43/x
3. Step 3: Cross multiply
   21,150.71x = 29,191.03 × 12,196.43
4. Step 4: Simplify right side
   21,150.71x = 356,026,208.07
5. Step 5: Solve for x
   x = 356,026,208.07/21,150.71
6. Step 6: Final answer
   x = 16,832.83