Finding the Fourth Proportional to 9,958.06, 13,740.60 and 5,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,958.06 : 13,740.60 = 5,765.50 : x
2. Step 2: Convert to fraction form
   9,958.06/13,740.60 = 5,765.50/x
3. Step 3: Cross multiply
   9,958.06x = 13,740.60 × 5,765.50
4. Step 4: Simplify right side
   9,958.06x = 79,221,429.30
5. Step 5: Solve for x
   x = 79,221,429.30/9,958.06
6. Step 6: Final answer
   x = 7,955.51