Finding the Fourth Proportional to 9,609.61, 13,261.67 and 5,630.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,609.61 : 13,261.67 = 5,630.17 : x
2. Step 2: Convert to fraction form
   9,609.61/13,261.67 = 5,630.17/x
3. Step 3: Cross multiply
   9,609.61x = 13,261.67 × 5,630.17
4. Step 4: Simplify right side
   9,609.61x = 74,665,456.58
5. Step 5: Solve for x
   x = 74,665,456.58/9,609.61
6. Step 6: Final answer
   x = 7,769.87