Finding the Fourth Proportional to 12,738.76, 19,101.15 and 4,418.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.76 : 19,101.15 = 4,418.03 : x
2. Step 2: Convert to fraction form
   12,738.76/19,101.15 = 4,418.03/x
3. Step 3: Cross multiply
   12,738.76x = 19,101.15 × 4,418.03
4. Step 4: Simplify right side
   12,738.76x = 84,389,501.49
5. Step 5: Solve for x
   x = 84,389,501.49/12,738.76
6. Step 6: Final answer
   x = 6,624.63