Finding the Fourth Proportional to 12,290.24, 18,443.88 and 4,894.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.24 : 18,443.88 = 4,894.01 : x
2. Step 2: Convert to fraction form
   12,290.24/18,443.88 = 4,894.01/x
3. Step 3: Cross multiply
   12,290.24x = 18,443.88 × 4,894.01
4. Step 4: Simplify right side
   12,290.24x = 90,264,533.16
5. Step 5: Solve for x
   x = 90,264,533.16/12,290.24
6. Step 6: Final answer
   x = 7,344.41