Finding the Fourth Proportional to 9,645.88, 13,311.54 and 5,454.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.88 : 13,311.54 = 5,454.28 : x
2. Step 2: Convert to fraction form
   9,645.88/13,311.54 = 5,454.28/x
3. Step 3: Cross multiply
   9,645.88x = 13,311.54 × 5,454.28
4. Step 4: Simplify right side
   9,645.88x = 72,604,866.39
5. Step 5: Solve for x
   x = 72,604,866.39/9,645.88
6. Step 6: Final answer
   x = 7,527.03