Finding the Fourth Proportional to 12,147.84, 18,219.69 and 3,380.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.84 : 18,219.69 = 3,380.67 : x
2. Step 2: Convert to fraction form
   12,147.84/18,219.69 = 3,380.67/x
3. Step 3: Cross multiply
   12,147.84x = 18,219.69 × 3,380.67
4. Step 4: Simplify right side
   12,147.84x = 61,594,759.39
5. Step 5: Solve for x
   x = 61,594,759.39/12,147.84
6. Step 6: Final answer
   x = 5,070.43