Finding the Fourth Proportional to 7,919.79, 10,930.71 and 5,090.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,919.79 : 10,930.71 = 5,090.68 : x
2. Step 2: Convert to fraction form
   7,919.79/10,930.71 = 5,090.68/x
3. Step 3: Cross multiply
   7,919.79x = 10,930.71 × 5,090.68
4. Step 4: Simplify right side
   7,919.79x = 55,644,746.78
5. Step 5: Solve for x
   x = 55,644,746.78/7,919.79
6. Step 6: Final answer
   x = 7,026.04