Finding the Fourth Proportional to 10,978.76, 16,456.34 and 4,741.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.76 : 16,456.34 = 4,741.71 : x
2. Step 2: Convert to fraction form
   10,978.76/16,456.34 = 4,741.71/x
3. Step 3: Cross multiply
   10,978.76x = 16,456.34 × 4,741.71
4. Step 4: Simplify right side
   10,978.76x = 78,031,207.98
5. Step 5: Solve for x
   x = 78,031,207.98/10,978.76
6. Step 6: Final answer
   x = 7,107.47