Finding the Fourth Proportional to 12,290.69, 18,436.10 and 3,056.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.69 : 18,436.10 = 3,056.69 : x
2. Step 2: Convert to fraction form
   12,290.69/18,436.10 = 3,056.69/x
3. Step 3: Cross multiply
   12,290.69x = 18,436.10 × 3,056.69
4. Step 4: Simplify right side
   12,290.69x = 56,353,442.51
5. Step 5: Solve for x
   x = 56,353,442.51/12,290.69
6. Step 6: Final answer
   x = 4,585.05