Finding the Fourth Proportional to 12,290.52, 18,436.98 and 4,893.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.52 : 18,436.98 = 4,893.25 : x
2. Step 2: Convert to fraction form
   12,290.52/18,436.98 = 4,893.25/x
3. Step 3: Cross multiply
   12,290.52x = 18,436.98 × 4,893.25
4. Step 4: Simplify right side
   12,290.52x = 90,216,727.92
5. Step 5: Solve for x
   x = 90,216,727.92/12,290.52
6. Step 6: Final answer
   x = 7,340.35