Finding the Fourth Proportional to 9,521.46, 13,139.60 and 5,329.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521.46 : 13,139.60 = 5,329.71 : x
2. Step 2: Convert to fraction form
   9,521.46/13,139.60 = 5,329.71/x
3. Step 3: Cross multiply
   9,521.46x = 13,139.60 × 5,329.71
4. Step 4: Simplify right side
   9,521.46x = 70,030,230.87
5. Step 5: Solve for x
   x = 70,030,230.87/9,521.46
6. Step 6: Final answer
   x = 7,354.99