Finding the Fourth Proportional to 22,449.36, 30,976.40 and 13,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,449.36 : 30,976.40 = 13,494.72 : x
2. Step 2: Convert to fraction form
   22,449.36/30,976.40 = 13,494.72/x
3. Step 3: Cross multiply
   22,449.36x = 30,976.40 × 13,494.72
4. Step 4: Simplify right side
   22,449.36x = 418,017,844.61
5. Step 5: Solve for x
   x = 418,017,844.61/22,449.36
6. Step 6: Final answer
   x = 18,620.48