Finding the Fourth Proportional to 5,527.67, 8,309.73 and 5,121.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,527.67 : 8,309.73 = 5,121.86 : x
2. Step 2: Convert to fraction form
   5,527.67/8,309.73 = 5,121.86/x
3. Step 3: Cross multiply
   5,527.67x = 8,309.73 × 5,121.86
4. Step 4: Simplify right side
   5,527.67x = 42,561,273.70
5. Step 5: Solve for x
   x = 42,561,273.70/5,527.67
6. Step 6: Final answer
   x = 7,699.68