Finding the Fourth Proportional to 9,705.68, 13,392.57 and 5,725.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,705.68 : 13,392.57 = 5,725.34 : x
2. Step 2: Convert to fraction form
   9,705.68/13,392.57 = 5,725.34/x
3. Step 3: Cross multiply
   9,705.68x = 13,392.57 × 5,725.34
4. Step 4: Simplify right side
   9,705.68x = 76,677,016.72
5. Step 5: Solve for x
   x = 76,677,016.72/9,705.68
6. Step 6: Final answer
   x = 7,900.22