Finding the Fourth Proportional to 22,470.96, 31,009.41 and 12,400.35

Step by Step Solution

1. Step 1: Write the proportion equation
   22,470.96 : 31,009.41 = 12,400.35 : x
2. Step 2: Convert to fraction form
   22,470.96/31,009.41 = 12,400.35/x
3. Step 3: Cross multiply
   22,470.96x = 31,009.41 × 12,400.35
4. Step 4: Simplify right side
   22,470.96x = 384,527,537.29
5. Step 5: Solve for x
   x = 384,527,537.29/22,470.96
6. Step 6: Final answer
   x = 17,112.20