Finding the Fourth Proportional to 10,076.76, 13,914.32 and 8,406.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,076.76 : 13,914.32 = 8,406.92 : x
2. Step 2: Convert to fraction form
   10,076.76/13,914.32 = 8,406.92/x
3. Step 3: Cross multiply
   10,076.76x = 13,914.32 × 8,406.92
4. Step 4: Simplify right side
   10,076.76x = 116,976,540.31
5. Step 5: Solve for x
   x = 116,976,540.31/10,076.76
6. Step 6: Final answer
   x = 11,608.55