Finding the Fourth Proportional to 4,645.76, 6,971.02 and 3,086.83

Step by Step Solution

1. Step 1: Write the proportion equation
   4,645.76 : 6,971.02 = 3,086.83 : x
2. Step 2: Convert to fraction form
   4,645.76/6,971.02 = 3,086.83/x
3. Step 3: Cross multiply
   4,645.76x = 6,971.02 × 3,086.83
4. Step 4: Simplify right side
   4,645.76x = 21,518,328.52
5. Step 5: Solve for x
   x = 21,518,328.52/4,645.76
6. Step 6: Final answer
   x = 4,631.83