Finding the Fourth Proportional to 7,906.16, 10,911.48 and 5,109.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,906.16 : 10,911.48 = 5,109.68 : x
2. Step 2: Convert to fraction form
   7,906.16/10,911.48 = 5,109.68/x
3. Step 3: Cross multiply
   7,906.16x = 10,911.48 × 5,109.68
4. Step 4: Simplify right side
   7,906.16x = 55,754,171.13
5. Step 5: Solve for x
   x = 55,754,171.13/7,906.16
6. Step 6: Final answer
   x = 7,051.99