Finding the Fourth Proportional to 9,705.90, 13,393.89 and 5,727.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,705.90 : 13,393.89 = 5,727.18 : x
2. Step 2: Convert to fraction form
   9,705.90/13,393.89 = 5,727.18/x
3. Step 3: Cross multiply
   9,705.90x = 13,393.89 × 5,727.18
4. Step 4: Simplify right side
   9,705.90x = 76,709,218.93
5. Step 5: Solve for x
   x = 76,709,218.93/9,705.90
6. Step 6: Final answer
   x = 7,903.36