Finding the Fourth Proportional to 8,641.24, 12,939.98 and 5,344.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,641.24 : 12,939.98 = 5,344.34 : x
2. Step 2: Convert to fraction form
   8,641.24/12,939.98 = 5,344.34/x
3. Step 3: Cross multiply
   8,641.24x = 12,939.98 × 5,344.34
4. Step 4: Simplify right side
   8,641.24x = 69,155,652.71
5. Step 5: Solve for x
   x = 69,155,652.71/8,641.24
6. Step 6: Final answer
   x = 8,002.98