Finding the Fourth Proportional to 12,031.31, 18,041.25 and 7,035.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,031.31 : 18,041.25 = 7,035.10 : x
2. Step 2: Convert to fraction form
   12,031.31/18,041.25 = 7,035.10/x
3. Step 3: Cross multiply
   12,031.31x = 18,041.25 × 7,035.10
4. Step 4: Simplify right side
   12,031.31x = 126,921,997.88
5. Step 5: Solve for x
   x = 126,921,997.88/12,031.31
6. Step 6: Final answer
   x = 10,549.31