Finding the Fourth Proportional to 9,821.35, 13,553.20 and 5,345.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.35 : 13,553.20 = 5,345.00 : x
2. Step 2: Convert to fraction form
   9,821.35/13,553.20 = 5,345.00/x
3. Step 3: Cross multiply
   9,821.35x = 13,553.20 × 5,345.00
4. Step 4: Simplify right side
   9,821.35x = 72,441,904.82
5. Step 5: Solve for x
   x = 72,441,904.82/9,821.35
6. Step 6: Final answer
   x = 7,375.96