Finding the Fourth Proportional to 22,056.50, 30,434.55 and 13,103.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,056.50 : 30,434.55 = 13,103.78 : x
2. Step 2: Convert to fraction form
   22,056.50/30,434.55 = 13,103.78/x
3. Step 3: Cross multiply
   22,056.50x = 30,434.55 × 13,103.78
4. Step 4: Simplify right side
   22,056.50x = 398,807,462.67
5. Step 5: Solve for x
   x = 398,807,462.67/22,056.50
6. Step 6: Final answer
   x = 18,081.17