Finding the Fourth Proportional to 10,686.57, 16,031.69 and 4,765.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.57 : 16,031.69 = 4,765.56 : x
2. Step 2: Convert to fraction form
   10,686.57/16,031.69 = 4,765.56/x
3. Step 3: Cross multiply
   10,686.57x = 16,031.69 × 4,765.56
4. Step 4: Simplify right side
   10,686.57x = 76,399,980.60
5. Step 5: Solve for x
   x = 76,399,980.60/10,686.57
6. Step 6: Final answer
   x = 7,149.16