Finding the Fourth Proportional to 10,884.71, 16,311.42 and 8,376.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,884.71 : 16,311.42 = 8,376.15 : x
2. Step 2: Convert to fraction form
   10,884.71/16,311.42 = 8,376.15/x
3. Step 3: Cross multiply
   10,884.71x = 16,311.42 × 8,376.15
4. Step 4: Simplify right side
   10,884.71x = 136,626,900.63
5. Step 5: Solve for x
   x = 136,626,900.63/10,884.71
6. Step 6: Final answer
   x = 12,552.19