Finding the Fourth Proportional to 13,019.76, 17,968.38 and 7,355.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.76 : 17,968.38 = 7,355.55 : x
2. Step 2: Convert to fraction form
   13,019.76/17,968.38 = 7,355.55/x
3. Step 3: Cross multiply
   13,019.76x = 17,968.38 × 7,355.55
4. Step 4: Simplify right side
   13,019.76x = 132,167,327.46
5. Step 5: Solve for x
   x = 132,167,327.46/13,019.76
6. Step 6: Final answer
   x = 10,151.29