Finding the Fourth Proportional to 3,419.77, 5,124.18 and 3,091.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,419.77 : 5,124.18 = 3,091.72 : x
2. Step 2: Convert to fraction form
   3,419.77/5,124.18 = 3,091.72/x
3. Step 3: Cross multiply
   3,419.77x = 5,124.18 × 3,091.72
4. Step 4: Simplify right side
   3,419.77x = 15,842,529.79
5. Step 5: Solve for x
   x = 15,842,529.79/3,419.77
6. Step 6: Final answer
   x = 4,632.63