Finding the Fourth Proportional to 10,686.23, 16,028.89 and 10,435.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,686.23 : 16,028.89 = 10,435.94 : x
2. Step 2: Convert to fraction form
   10,686.23/16,028.89 = 10,435.94/x
3. Step 3: Cross multiply
   10,686.23x = 16,028.89 × 10,435.94
4. Step 4: Simplify right side
   10,686.23x = 167,276,488.18
5. Step 5: Solve for x
   x = 167,276,488.18/10,686.23
6. Step 6: Final answer
   x = 15,653.46