Finding the Fourth Proportional to 10,932.54, 16,411.84 and 10,486.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,932.54 : 16,411.84 = 10,486.94 : x
2. Step 2: Convert to fraction form
   10,932.54/16,411.84 = 10,486.94/x
3. Step 3: Cross multiply
   10,932.54x = 16,411.84 × 10,486.94
4. Step 4: Simplify right side
   10,932.54x = 172,109,981.37
5. Step 5: Solve for x
   x = 172,109,981.37/10,932.54
6. Step 6: Final answer
   x = 15,742.91