Finding the Fourth Proportional to 9,966.27, 13,753.57 and 5,489.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,966.27 : 13,753.57 = 5,489.93 : x
2. Step 2: Convert to fraction form
   9,966.27/13,753.57 = 5,489.93/x
3. Step 3: Cross multiply
   9,966.27x = 13,753.57 × 5,489.93
4. Step 4: Simplify right side
   9,966.27x = 75,506,177.80
5. Step 5: Solve for x
   x = 75,506,177.80/9,966.27
6. Step 6: Final answer
   x = 7,576.17