Finding the Fourth Proportional to 12,200.34, 18,293.97 and 3,878.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.34 : 18,293.97 = 3,878.10 : x
2. Step 2: Convert to fraction form
   12,200.34/18,293.97 = 3,878.10/x
3. Step 3: Cross multiply
   12,200.34x = 18,293.97 × 3,878.10
4. Step 4: Simplify right side
   12,200.34x = 70,945,845.06
5. Step 5: Solve for x
   x = 70,945,845.06/12,200.34
6. Step 6: Final answer
   x = 5,815.07