Finding the Fourth Proportional to 9,699.82, 13,384.62 and 5,450.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699.82 : 13,384.62 = 5,450.31 : x
2. Step 2: Convert to fraction form
   9,699.82/13,384.62 = 5,450.31/x
3. Step 3: Cross multiply
   9,699.82x = 13,384.62 × 5,450.31
4. Step 4: Simplify right side
   9,699.82x = 72,950,328.23
5. Step 5: Solve for x
   x = 72,950,328.23/9,699.82
6. Step 6: Final answer
   x = 7,520.79