Finding the Fourth Proportional to 9,908.69, 14,861.67 and 5,474.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,908.69 : 14,861.67 = 5,474.55 : x
2. Step 2: Convert to fraction form
   9,908.69/14,861.67 = 5,474.55/x
3. Step 3: Cross multiply
   9,908.69x = 14,861.67 × 5,474.55
4. Step 4: Simplify right side
   9,908.69x = 81,360,955.50
5. Step 5: Solve for x
   x = 81,360,955.50/9,908.69
6. Step 6: Final answer
   x = 8,211.07