Finding the Fourth Proportional to 15,704.49, 21,654.52 and 12,111.33

Step by Step Solution

1. Step 1: Write the proportion equation
   15,704.49 : 21,654.52 = 12,111.33 : x
2. Step 2: Convert to fraction form
   15,704.49/21,654.52 = 12,111.33/x
3. Step 3: Cross multiply
   15,704.49x = 21,654.52 × 12,111.33
4. Step 4: Simplify right side
   15,704.49x = 262,265,037.71
5. Step 5: Solve for x
   x = 262,265,037.71/15,704.49
6. Step 6: Final answer
   x = 16,700.00