Finding the Fourth Proportional to 22,490.51, 31,036.06 and 12,418.73

Step by Step Solution

1. Step 1: Write the proportion equation
   22,490.51 : 31,036.06 = 12,418.73 : x
2. Step 2: Convert to fraction form
   22,490.51/31,036.06 = 12,418.73/x
3. Step 3: Cross multiply
   22,490.51x = 31,036.06 × 12,418.73
4. Step 4: Simplify right side
   22,490.51x = 385,428,449.40
5. Step 5: Solve for x
   x = 385,428,449.40/22,490.51
6. Step 6: Final answer
   x = 17,137.38