Finding the Fourth Proportional to 7,923.77, 10,928.17 and 5,091.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,923.77 : 10,928.17 = 5,091.61 : x
2. Step 2: Convert to fraction form
   7,923.77/10,928.17 = 5,091.61/x
3. Step 3: Cross multiply
   7,923.77x = 10,928.17 × 5,091.61
4. Step 4: Simplify right side
   7,923.77x = 55,641,950.55
5. Step 5: Solve for x
   x = 55,641,950.55/7,923.77
6. Step 6: Final answer
   x = 7,022.15