Finding the Fourth Proportional to 7,919.45, 10,925.73 and 5,086.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,919.45 : 10,925.73 = 5,086.43 : x
2. Step 2: Convert to fraction form
   7,919.45/10,925.73 = 5,086.43/x
3. Step 3: Cross multiply
   7,919.45x = 10,925.73 × 5,086.43
4. Step 4: Simplify right side
   7,919.45x = 55,573,011.16
5. Step 5: Solve for x
   x = 55,573,011.16/7,919.45
6. Step 6: Final answer
   x = 7,017.28