Finding the Fourth Proportional to 12,315.06, 16,994.85 and 6,726.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.06 : 16,994.85 = 6,726.42 : x
2. Step 2: Convert to fraction form
   12,315.06/16,994.85 = 6,726.42/x
3. Step 3: Cross multiply
   12,315.06x = 16,994.85 × 6,726.42
4. Step 4: Simplify right side
   12,315.06x = 114,314,498.94
5. Step 5: Solve for x
   x = 114,314,498.94/12,315.06
6. Step 6: Final answer
   x = 9,282.50