Finding the Fourth Proportional to 9,654.28, 13,321.73 and 5,405.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,654.28 : 13,321.73 = 5,405.56 : x
2. Step 2: Convert to fraction form
   9,654.28/13,321.73 = 5,405.56/x
3. Step 3: Cross multiply
   9,654.28x = 13,321.73 × 5,405.56
4. Step 4: Simplify right side
   9,654.28x = 72,011,391.03
5. Step 5: Solve for x
   x = 72,011,391.03/9,654.28
6. Step 6: Final answer
   x = 7,459.01