Finding the Fourth Proportional to 9,945.90, 13,725.33 and 5,469.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.90 : 13,725.33 = 5,469.95 : x
2. Step 2: Convert to fraction form
   9,945.90/13,725.33 = 5,469.95/x
3. Step 3: Cross multiply
   9,945.90x = 13,725.33 × 5,469.95
4. Step 4: Simplify right side
   9,945.90x = 75,076,800.21
5. Step 5: Solve for x
   x = 75,076,800.21/9,945.90
6. Step 6: Final answer
   x = 7,548.52