Finding the Fourth Proportional to 12,443.99, 18,667.80 and 4,546.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.99 : 18,667.80 = 4,546.89 : x
2. Step 2: Convert to fraction form
   12,443.99/18,667.80 = 4,546.89/x
3. Step 3: Cross multiply
   12,443.99x = 18,667.80 × 4,546.89
4. Step 4: Simplify right side
   12,443.99x = 84,880,433.14
5. Step 5: Solve for x
   x = 84,880,433.14/12,443.99
6. Step 6: Final answer
   x = 6,821.00