Finding the Fourth Proportional to 7,727.80, 10,663.42 and 5,488.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,727.80 : 10,663.42 = 5,488.86 : x
2. Step 2: Convert to fraction form
   7,727.80/10,663.42 = 5,488.86/x
3. Step 3: Cross multiply
   7,727.80x = 10,663.42 × 5,488.86
4. Step 4: Simplify right side
   7,727.80x = 58,530,019.50
5. Step 5: Solve for x
   x = 58,530,019.50/7,727.80
6. Step 6: Final answer
   x = 7,573.96