Finding the Fourth Proportional to 12,105.63, 18,158.90 and 3,341.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.63 : 18,158.90 = 3,341.21 : x
2. Step 2: Convert to fraction form
   12,105.63/18,158.90 = 3,341.21/x
3. Step 3: Cross multiply
   12,105.63x = 18,158.90 × 3,341.21
4. Step 4: Simplify right side
   12,105.63x = 60,672,590.77
5. Step 5: Solve for x
   x = 60,672,590.77/12,105.63
6. Step 6: Final answer
   x = 5,011.93