Finding the Fourth Proportional to 12,078.30, 16,948.50 and 12,078.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.30 : 16,948.50 = 12,078.30 : x
2. Step 2: Convert to fraction form
   12,078.30/16,948.50 = 12,078.30/x
3. Step 3: Cross multiply
   12,078.30x = 16,948.50 × 12,078.30
4. Step 4: Simplify right side
   12,078.30x = 204,709,067.55
5. Step 5: Solve for x
   x = 204,709,067.55/12,078.30
6. Step 6: Final answer
   x = 16,948.50