Finding the Fourth Proportional to 22,477.70, 31,019.22 and 12,406.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,477.70 : 31,019.22 = 12,406.14 : x
2. Step 2: Convert to fraction form
   22,477.70/31,019.22 = 12,406.14/x
3. Step 3: Cross multiply
   22,477.70x = 31,019.22 × 12,406.14
4. Step 4: Simplify right side
   22,477.70x = 384,828,786.01
5. Step 5: Solve for x
   x = 384,828,786.01/22,477.70
6. Step 6: Final answer
   x = 17,120.47