Finding the Fourth Proportional to 9,947.06, 13,725.42 and 5,754.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.06 : 13,725.42 = 5,754.50 : x
2. Step 2: Convert to fraction form
   9,947.06/13,725.42 = 5,754.50/x
3. Step 3: Cross multiply
   9,947.06x = 13,725.42 × 5,754.50
4. Step 4: Simplify right side
   9,947.06x = 78,982,929.39
5. Step 5: Solve for x
   x = 78,982,929.39/9,947.06
6. Step 6: Final answer
   x = 7,940.33