Finding the Fourth Proportional to 21,666.09, 29,898.83 and 12,106.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,666.09 : 29,898.83 = 12,106.16 : x
2. Step 2: Convert to fraction form
   21,666.09/29,898.83 = 12,106.16/x
3. Step 3: Cross multiply
   21,666.09x = 29,898.83 × 12,106.16
4. Step 4: Simplify right side
   21,666.09x = 361,959,809.77
5. Step 5: Solve for x
   x = 361,959,809.77/21,666.09
6. Step 6: Final answer
   x = 16,706.28