Finding the Fourth Proportional to 13,139.46, 19,716.71 and 4,818.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,139.46 : 19,716.71 = 4,818.38 : x
2. Step 2: Convert to fraction form
   13,139.46/19,716.71 = 4,818.38/x
3. Step 3: Cross multiply
   13,139.46x = 19,716.71 × 4,818.38
4. Step 4: Simplify right side
   13,139.46x = 95,002,478.45
5. Step 5: Solve for x
   x = 95,002,478.45/13,139.46
6. Step 6: Final answer
   x = 7,230.32