Finding the Fourth Proportional to 22,477.96, 31,019.41 and 12,406.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,477.96 : 31,019.41 = 12,406.82 : x
2. Step 2: Convert to fraction form
   22,477.96/31,019.41 = 12,406.82/x
3. Step 3: Cross multiply
   22,477.96x = 31,019.41 × 12,406.82
4. Step 4: Simplify right side
   22,477.96x = 384,852,201.48
5. Step 5: Solve for x
   x = 384,852,201.48/22,477.96
6. Step 6: Final answer
   x = 17,121.32