Finding the Fourth Proportional to 10,628.34, 15,942.38 and 4,780.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,628.34 : 15,942.38 = 4,780.82 : x
2. Step 2: Convert to fraction form
   10,628.34/15,942.38 = 4,780.82/x
3. Step 3: Cross multiply
   10,628.34x = 15,942.38 × 4,780.82
4. Step 4: Simplify right side
   10,628.34x = 76,217,649.15
5. Step 5: Solve for x
   x = 76,217,649.15/10,628.34
6. Step 6: Final answer
   x = 7,171.17