Finding the Fourth Proportional to 21,094.65, 29,111.27 and 12,143.95

Step by Step Solution

1. Step 1: Write the proportion equation
   21,094.65 : 29,111.27 = 12,143.95 : x
2. Step 2: Convert to fraction form
   21,094.65/29,111.27 = 12,143.95/x
3. Step 3: Cross multiply
   21,094.65x = 29,111.27 × 12,143.95
4. Step 4: Simplify right side
   21,094.65x = 353,525,673.82
5. Step 5: Solve for x
   x = 353,525,673.82/21,094.65
6. Step 6: Final answer
   x = 16,759.02