Finding the Fourth Proportional to 13,597.25, 18,764.37 and 7,628.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,597.25 : 18,764.37 = 7,628.55 : x
2. Step 2: Convert to fraction form
   13,597.25/18,764.37 = 7,628.55/x
3. Step 3: Cross multiply
   13,597.25x = 18,764.37 × 7,628.55
4. Step 4: Simplify right side
   13,597.25x = 143,144,934.76
5. Step 5: Solve for x
   x = 143,144,934.76/13,597.25
6. Step 6: Final answer
   x = 10,527.50