Finding the Fourth Proportional to 10,686.72, 16,025.58 and 4,359.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.72 : 16,025.58 = 4,359.84 : x
2. Step 2: Convert to fraction form
   10,686.72/16,025.58 = 4,359.84/x
3. Step 3: Cross multiply
   10,686.72x = 16,025.58 × 4,359.84
4. Step 4: Simplify right side
   10,686.72x = 69,868,964.71
5. Step 5: Solve for x
   x = 69,868,964.71/10,686.72
6. Step 6: Final answer
   x = 6,537.92