Finding the Fourth Proportional to 12,128.94, 18,193.83 and 3,364.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,128.94 : 18,193.83 = 3,364.50 : x
2. Step 2: Convert to fraction form
   12,128.94/18,193.83 = 3,364.50/x
3. Step 3: Cross multiply
   12,128.94x = 18,193.83 × 3,364.50
4. Step 4: Simplify right side
   12,128.94x = 61,213,141.04
5. Step 5: Solve for x
   x = 61,213,141.04/12,128.94
6. Step 6: Final answer
   x = 5,046.87