Finding the Fourth Proportional to 9,698.82, 13,384.24 and 5,721.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,698.82 : 13,384.24 = 5,721.21 : x
2. Step 2: Convert to fraction form
   9,698.82/13,384.24 = 5,721.21/x
3. Step 3: Cross multiply
   9,698.82x = 13,384.24 × 5,721.21
4. Step 4: Simplify right side
   9,698.82x = 76,574,047.73
5. Step 5: Solve for x
   x = 76,574,047.73/9,698.82
6. Step 6: Final answer
   x = 7,895.19