Finding the Fourth Proportional to 22,476.90, 31,018.09 and 12,405.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,476.90 : 31,018.09 = 12,405.34 : x
2. Step 2: Convert to fraction form
   22,476.90/31,018.09 = 12,405.34/x
3. Step 3: Cross multiply
   22,476.90x = 31,018.09 × 12,405.34
4. Step 4: Simplify right side
   22,476.90x = 384,789,952.60
5. Step 5: Solve for x
   x = 384,789,952.60/22,476.90
6. Step 6: Final answer
   x = 17,119.35