Finding the Fourth Proportional to 10,878.82, 16,392.38 and 8,947.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878.82 : 16,392.38 = 8,947.71 : x
2. Step 2: Convert to fraction form
   10,878.82/16,392.38 = 8,947.71/x
3. Step 3: Cross multiply
   10,878.82x = 16,392.38 × 8,947.71
4. Step 4: Simplify right side
   10,878.82x = 146,674,217.71
5. Step 5: Solve for x
   x = 146,674,217.71/10,878.82
6. Step 6: Final answer
   x = 13,482.55