Finding the Fourth Proportional to 5,155.72, 7,116.69 and 3,166.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.72 : 7,116.69 = 3,166.46 : x
2. Step 2: Convert to fraction form
   5,155.72/7,116.69 = 3,166.46/x
3. Step 3: Cross multiply
   5,155.72x = 7,116.69 × 3,166.46
4. Step 4: Simplify right side
   5,155.72x = 22,534,717.20
5. Step 5: Solve for x
   x = 22,534,717.20/5,155.72
6. Step 6: Final answer
   x = 4,370.82