Finding the Fourth Proportional to 12,296.90, 18,429.15 and 10,903.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,296.90 : 18,429.15 = 10,903.70 : x
2. Step 2: Convert to fraction form
   12,296.90/18,429.15 = 10,903.70/x
3. Step 3: Cross multiply
   12,296.90x = 18,429.15 × 10,903.70
4. Step 4: Simplify right side
   12,296.90x = 200,945,922.86
5. Step 5: Solve for x
   x = 200,945,922.86/12,296.90
6. Step 6: Final answer
   x = 16,341.19