Finding the Fourth Proportional to 10,287.05, 15,425.71 and 4,738.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.05 : 15,425.71 = 4,738.76 : x
2. Step 2: Convert to fraction form
   10,287.05/15,425.71 = 4,738.76/x
3. Step 3: Cross multiply
   10,287.05x = 15,425.71 × 4,738.76
4. Step 4: Simplify right side
   10,287.05x = 73,098,636.70
5. Step 5: Solve for x
   x = 73,098,636.70/10,287.05
6. Step 6: Final answer
   x = 7,105.89