Finding the Fourth Proportional to 12,118.62, 18,178.16 and 3,798.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.62 : 18,178.16 = 3,798.45 : x
2. Step 2: Convert to fraction form
   12,118.62/18,178.16 = 3,798.45/x
3. Step 3: Cross multiply
   12,118.62x = 18,178.16 × 3,798.45
4. Step 4: Simplify right side
   12,118.62x = 69,048,812.86
5. Step 5: Solve for x
   x = 69,048,812.86/12,118.62
6. Step 6: Final answer
   x = 5,697.75