Finding the Fourth Proportional to 9,947.40, 13,725.36 and 5,698.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.40 : 13,725.36 = 5,698.68 : x
2. Step 2: Convert to fraction form
   9,947.40/13,725.36 = 5,698.68/x
3. Step 3: Cross multiply
   9,947.40x = 13,725.36 × 5,698.68
4. Step 4: Simplify right side
   9,947.40x = 78,216,434.52
5. Step 5: Solve for x
   x = 78,216,434.52/9,947.40
6. Step 6: Final answer
   x = 7,863.00