Finding the Fourth Proportional to 12,223.98, 18,279.94 and 9,106.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,223.98 : 18,279.94 = 9,106.14 : x
2. Step 2: Convert to fraction form
   12,223.98/18,279.94 = 9,106.14/x
3. Step 3: Cross multiply
   12,223.98x = 18,279.94 × 9,106.14
4. Step 4: Simplify right side
   12,223.98x = 166,459,692.83
5. Step 5: Solve for x
   x = 166,459,692.83/12,223.98
6. Step 6: Final answer
   x = 13,617.47