Finding the Fourth Proportional to 9,945.35, 13,724.45 and 5,469.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.35 : 13,724.45 = 5,469.06 : x
2. Step 2: Convert to fraction form
   9,945.35/13,724.45 = 5,469.06/x
3. Step 3: Cross multiply
   9,945.35x = 13,724.45 × 5,469.06
4. Step 4: Simplify right side
   9,945.35x = 75,059,840.52
5. Step 5: Solve for x
   x = 75,059,840.52/9,945.35
6. Step 6: Final answer
   x = 7,547.23