Finding the Fourth Proportional to 10,842.42, 16,238.37 and 10,543.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,842.42 : 16,238.37 = 10,543.14 : x
2. Step 2: Convert to fraction form
   10,842.42/16,238.37 = 10,543.14/x
3. Step 3: Cross multiply
   10,842.42x = 16,238.37 × 10,543.14
4. Step 4: Simplify right side
   10,842.42x = 171,203,455.83
5. Step 5: Solve for x
   x = 171,203,455.83/10,842.42
6. Step 6: Final answer
   x = 15,790.15