Finding the Fourth Proportional to 22,788.42, 31,439.61 and 13,353.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,788.42 : 31,439.61 = 13,353.54 : x
2. Step 2: Convert to fraction form
   22,788.42/31,439.61 = 13,353.54/x
3. Step 3: Cross multiply
   22,788.42x = 31,439.61 × 13,353.54
4. Step 4: Simplify right side
   22,788.42x = 419,830,089.72
5. Step 5: Solve for x
   x = 419,830,089.72/22,788.42
6. Step 6: Final answer
   x = 18,422.96