Finding the Fourth Proportional to 10,720.60, 16,086.38 and 5,104.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,720.60 : 16,086.38 = 5,104.62 : x
2. Step 2: Convert to fraction form
   10,720.60/16,086.38 = 5,104.62/x
3. Step 3: Cross multiply
   10,720.60x = 16,086.38 × 5,104.62
4. Step 4: Simplify right side
   10,720.60x = 82,114,831.55
5. Step 5: Solve for x
   x = 82,114,831.55/10,720.60
6. Step 6: Final answer
   x = 7,659.54