Finding the Fourth Proportional to 22,498.92, 31,052.49 and 12,938.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,498.92 : 31,052.49 = 12,938.06 : x
2. Step 2: Convert to fraction form
   22,498.92/31,052.49 = 12,938.06/x
3. Step 3: Cross multiply
   22,498.92x = 31,052.49 × 12,938.06
4. Step 4: Simplify right side
   22,498.92x = 401,758,978.77
5. Step 5: Solve for x
   x = 401,758,978.77/22,498.92
6. Step 6: Final answer
   x = 17,856.81