Finding the Fourth Proportional to 12,124.34, 16,725.66 and 7,400.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,124.34 : 16,725.66 = 7,400.42 : x
2. Step 2: Convert to fraction form
   12,124.34/16,725.66 = 7,400.42/x
3. Step 3: Cross multiply
   12,124.34x = 16,725.66 × 7,400.42
4. Step 4: Simplify right side
   12,124.34x = 123,776,908.78
5. Step 5: Solve for x
   x = 123,776,908.78/12,124.34
6. Step 6: Final answer
   x = 10,208.96