Finding the Fourth Proportional to 21,622.02, 29,838.60 and 12,062.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,622.02 : 29,838.60 = 12,062.78 : x
2. Step 2: Convert to fraction form
   21,622.02/29,838.60 = 12,062.78/x
3. Step 3: Cross multiply
   21,622.02x = 29,838.60 × 12,062.78
4. Step 4: Simplify right side
   21,622.02x = 359,936,467.31
5. Step 5: Solve for x
   x = 359,936,467.31/21,622.02
6. Step 6: Final answer
   x = 16,646.75