Finding the Fourth Proportional to 10,689.83, 16,042.96 and 10,141.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,689.83 : 16,042.96 = 10,141.05 : x
2. Step 2: Convert to fraction form
   10,689.83/16,042.96 = 10,141.05/x
3. Step 3: Cross multiply
   10,689.83x = 16,042.96 × 10,141.05
4. Step 4: Simplify right side
   10,689.83x = 162,692,532.35
5. Step 5: Solve for x
   x = 162,692,532.35/10,689.83
6. Step 6: Final answer
   x = 15,219.37