Finding the Fourth Proportional to 12,665.34, 17,384.54 and 12,124.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.34 : 17,384.54 = 12,124.06 : x
2. Step 2: Convert to fraction form
   12,665.34/17,384.54 = 12,124.06/x
3. Step 3: Cross multiply
   12,665.34x = 17,384.54 × 12,124.06
4. Step 4: Simplify right side
   12,665.34x = 210,771,206.03
5. Step 5: Solve for x
   x = 210,771,206.03/12,665.34
6. Step 6: Final answer
   x = 16,641.58