Finding the Fourth Proportional to 9,645.39, 13,311.18 and 5,667.66

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.39 : 13,311.18 = 5,667.66 : x
2. Step 2: Convert to fraction form
   9,645.39/13,311.18 = 5,667.66/x
3. Step 3: Cross multiply
   9,645.39x = 13,311.18 × 5,667.66
4. Step 4: Simplify right side
   9,645.39x = 75,443,242.44
5. Step 5: Solve for x
   x = 75,443,242.44/9,645.39
6. Step 6: Final answer
   x = 7,821.69