Finding the Fourth Proportional to 7,086.35, 10,630.96 and 3,970.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.35 : 10,630.96 = 3,970.80 : x
2. Step 2: Convert to fraction form
   7,086.35/10,630.96 = 3,970.80/x
3. Step 3: Cross multiply
   7,086.35x = 10,630.96 × 3,970.80
4. Step 4: Simplify right side
   7,086.35x = 42,213,406.04
5. Step 5: Solve for x
   x = 42,213,406.04/7,086.35
6. Step 6: Final answer
   x = 5,957.00