Finding the Fourth Proportional to 8,447.98, 12,667.53 and 4,939.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,447.98 : 12,667.53 = 4,939.18 : x
2. Step 2: Convert to fraction form
   8,447.98/12,667.53 = 4,939.18/x
3. Step 3: Cross multiply
   8,447.98x = 12,667.53 × 4,939.18
4. Step 4: Simplify right side
   8,447.98x = 62,567,210.83
5. Step 5: Solve for x
   x = 62,567,210.83/8,447.98
6. Step 6: Final answer
   x = 7,406.17