Finding the Fourth Proportional to 8,998.54, 12,414.69 and 5,641.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,998.54 : 12,414.69 = 5,641.49 : x
2. Step 2: Convert to fraction form
   8,998.54/12,414.69 = 5,641.49/x
3. Step 3: Cross multiply
   8,998.54x = 12,414.69 × 5,641.49
4. Step 4: Simplify right side
   8,998.54x = 70,037,380.52
5. Step 5: Solve for x
   x = 70,037,380.52/8,998.54
6. Step 6: Final answer
   x = 7,783.20