Finding the Fourth Proportional to 10,686.72, 16,030.06 and 4,446.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.72 : 16,030.06 = 4,446.60 : x
2. Step 2: Convert to fraction form
   10,686.72/16,030.06 = 4,446.60/x
3. Step 3: Cross multiply
   10,686.72x = 16,030.06 × 4,446.60
4. Step 4: Simplify right side
   10,686.72x = 71,279,264.80
5. Step 5: Solve for x
   x = 71,279,264.80/10,686.72
6. Step 6: Final answer
   x = 6,669.89