Finding the Fourth Proportional to 9,521.04, 13,138.56 and 5,329.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.04 : 13,138.56 = 5,329.56 : x
2. Step 2: Convert to fraction form
   9,521.04/13,138.56 = 5,329.56/x
3. Step 3: Cross multiply
   9,521.04x = 13,138.56 × 5,329.56
4. Step 4: Simplify right side
   9,521.04x = 70,022,743.83
5. Step 5: Solve for x
   x = 70,022,743.83/9,521.04
6. Step 6: Final answer
   x = 7,354.53