Finding the Fourth Proportional to 9,821.97, 13,554.45 and 5,345.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.97 : 13,554.45 = 5,345.82 : x
2. Step 2: Convert to fraction form
   9,821.97/13,554.45 = 5,345.82/x
3. Step 3: Cross multiply
   9,821.97x = 13,554.45 × 5,345.82
4. Step 4: Simplify right side
   9,821.97x = 72,459,649.90
5. Step 5: Solve for x
   x = 72,459,649.90/9,821.97
6. Step 6: Final answer
   x = 7,377.30