Finding the Fourth Proportional to 9,806.38, 13,529.80 and 5,556.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,806.38 : 13,529.80 = 5,556.76 : x
2. Step 2: Convert to fraction form
   9,806.38/13,529.80 = 5,556.76/x
3. Step 3: Cross multiply
   9,806.38x = 13,529.80 × 5,556.76
4. Step 4: Simplify right side
   9,806.38x = 75,181,851.45
5. Step 5: Solve for x
   x = 75,181,851.45/9,806.38
6. Step 6: Final answer
   x = 7,666.63