Finding the Fourth Proportional to 21,362.04, 29,477.40 and 12,411.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,362.04 : 29,477.40 = 12,411.42 : x
2. Step 2: Convert to fraction form
   21,362.04/29,477.40 = 12,411.42/x
3. Step 3: Cross multiply
   21,362.04x = 29,477.40 × 12,411.42
4. Step 4: Simplify right side
   21,362.04x = 365,856,391.91
5. Step 5: Solve for x
   x = 365,856,391.91/21,362.04
6. Step 6: Final answer
   x = 17,126.47