Finding the Fourth Proportional to 12,909.49, 17,821.82 and 10,031.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,909.49 : 17,821.82 = 10,031.83 : x
2. Step 2: Convert to fraction form
   12,909.49/17,821.82 = 10,031.83/x
3. Step 3: Cross multiply
   12,909.49x = 17,821.82 × 10,031.83
4. Step 4: Simplify right side
   12,909.49x = 178,785,449.06
5. Step 5: Solve for x
   x = 178,785,449.06/12,909.49
6. Step 6: Final answer
   x = 13,849.15