Finding the Fourth Proportional to 9,945.68, 13,725.60 and 5,469.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.68 : 13,725.60 = 5,469.92 : x
2. Step 2: Convert to fraction form
   9,945.68/13,725.60 = 5,469.92/x
3. Step 3: Cross multiply
   9,945.68x = 13,725.60 × 5,469.92
4. Step 4: Simplify right side
   9,945.68x = 75,077,933.95
5. Step 5: Solve for x
   x = 75,077,933.95/9,945.68
6. Step 6: Final answer
   x = 7,548.80