Finding the Fourth Proportional to 9,804.52, 13,530.21 and 5,555.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,804.52 : 13,530.21 = 5,555.57 : x
2. Step 2: Convert to fraction form
   9,804.52/13,530.21 = 5,555.57/x
3. Step 3: Cross multiply
   9,804.52x = 13,530.21 × 5,555.57
4. Step 4: Simplify right side
   9,804.52x = 75,168,028.77
5. Step 5: Solve for x
   x = 75,168,028.77/9,804.52
6. Step 6: Final answer
   x = 7,666.67