Finding the Fourth Proportional to 9,945.92, 13,725.11 and 5,470.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.92 : 13,725.11 = 5,470.13 : x
2. Step 2: Convert to fraction form
   9,945.92/13,725.11 = 5,470.13/x
3. Step 3: Cross multiply
   9,945.92x = 13,725.11 × 5,470.13
4. Step 4: Simplify right side
   9,945.92x = 75,078,108.61
5. Step 5: Solve for x
   x = 75,078,108.61/9,945.92
6. Step 6: Final answer
   x = 7,548.63