Finding the Fourth Proportional to 35,168.61, 52,760.61 and 10,209

Step by Step Solution

1. Step 1: Write the proportion equation
   35,168.61 : 52,760.61 = 10,209 : x
2. Step 2: Convert to fraction form
   35,168.61/52,760.61 = 10,209/x
3. Step 3: Cross multiply
   35,168.61x = 52,760.61 × 10,209
4. Step 4: Simplify right side
   35,168.61x = 538,633,067.49
5. Step 5: Solve for x
   x = 538,633,067.49/35,168.61
6. Step 6: Final answer
   x = 15,315.73