Finding the Fourth Proportional to 10,956.86, 16,435.31 and 3,166.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.86 : 16,435.31 = 3,166.30 : x
2. Step 2: Convert to fraction form
   10,956.86/16,435.31 = 3,166.30/x
3. Step 3: Cross multiply
   10,956.86x = 16,435.31 × 3,166.30
4. Step 4: Simplify right side
   10,956.86x = 52,039,122.05
5. Step 5: Solve for x
   x = 52,039,122.05/10,956.86
6. Step 6: Final answer
   x = 4,749.46