Finding the Fourth Proportional to 7,761.72, 10,709.65 and 5,367.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,761.72 : 10,709.65 = 5,367.98 : x
2. Step 2: Convert to fraction form
   7,761.72/10,709.65 = 5,367.98/x
3. Step 3: Cross multiply
   7,761.72x = 10,709.65 × 5,367.98
4. Step 4: Simplify right side
   7,761.72x = 57,489,187.01
5. Step 5: Solve for x
   x = 57,489,187.01/7,761.72
6. Step 6: Final answer
   x = 7,406.76