Finding the Fourth Proportional to 7,928.56, 10,941.42 and 5,138.92

Step by Step Solution

1. Step 1: Write the proportion equation
   7,928.56 : 10,941.42 = 5,138.92 : x
2. Step 2: Convert to fraction form
   7,928.56/10,941.42 = 5,138.92/x
3. Step 3: Cross multiply
   7,928.56x = 10,941.42 × 5,138.92
4. Step 4: Simplify right side
   7,928.56x = 56,227,082.07
5. Step 5: Solve for x
   x = 56,227,082.07/7,928.56
6. Step 6: Final answer
   x = 7,091.71