Finding the Fourth Proportional to 21,628.01, 29,846.61 and 12,196.58

Step by Step Solution

1. Step 1: Write the proportion equation
   21,628.01 : 29,846.61 = 12,196.58 : x
2. Step 2: Convert to fraction form
   21,628.01/29,846.61 = 12,196.58/x
3. Step 3: Cross multiply
   21,628.01x = 29,846.61 × 12,196.58
4. Step 4: Simplify right side
   21,628.01x = 364,026,417.36
5. Step 5: Solve for x
   x = 364,026,417.36/21,628.01
6. Step 6: Final answer
   x = 16,831.25