Finding the Fourth Proportional to 22,496.05, 31,050.56 and 12,936.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,496.05 : 31,050.56 = 12,936.99 : x
2. Step 2: Convert to fraction form
   22,496.05/31,050.56 = 12,936.99/x
3. Step 3: Cross multiply
   22,496.05x = 31,050.56 × 12,936.99
4. Step 4: Simplify right side
   22,496.05x = 401,700,784.21
5. Step 5: Solve for x
   x = 401,700,784.21/22,496.05
6. Step 6: Final answer
   x = 17,856.50