Finding the Fourth Proportional to 9,945.88, 13,725.36 and 5,469.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.88 : 13,725.36 = 5,469.92 : x
2. Step 2: Convert to fraction form
   9,945.88/13,725.36 = 5,469.92/x
3. Step 3: Cross multiply
   9,945.88x = 13,725.36 × 5,469.92
4. Step 4: Simplify right side
   9,945.88x = 75,076,621.17
5. Step 5: Solve for x
   x = 75,076,621.17/9,945.88
6. Step 6: Final answer
   x = 7,548.51