Finding the Fourth Proportional to 9,821.34, 13,553.48 and 5,345.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.34 : 13,553.48 = 5,345.09 : x
2. Step 2: Convert to fraction form
   9,821.34/13,553.48 = 5,345.09/x
3. Step 3: Cross multiply
   9,821.34x = 13,553.48 × 5,345.09
4. Step 4: Simplify right side
   9,821.34x = 72,444,570.41
5. Step 5: Solve for x
   x = 72,444,570.41/9,821.34
6. Step 6: Final answer
   x = 7,376.24