Finding the Fourth Proportional to 10,366.77, 15,556.82 and 10,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,366.77 : 15,556.82 = 10,328.50 : x
2. Step 2: Convert to fraction form
   10,366.77/15,556.82 = 10,328.50/x
3. Step 3: Cross multiply
   10,366.77x = 15,556.82 × 10,328.50
4. Step 4: Simplify right side
   10,366.77x = 160,678,615.37
5. Step 5: Solve for x
   x = 160,678,615.37/10,366.77
6. Step 6: Final answer
   x = 15,499.39