Finding the Fourth Proportional to 12,118.93, 18,178.82 and 3,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.93 : 18,178.82 = 3,354.50 : x
2. Step 2: Convert to fraction form
   12,118.93/18,178.82 = 3,354.50/x
3. Step 3: Cross multiply
   12,118.93x = 18,178.82 × 3,354.50
4. Step 4: Simplify right side
   12,118.93x = 60,980,851.69
5. Step 5: Solve for x
   x = 60,980,851.69/12,118.93
6. Step 6: Final answer
   x = 5,031.87