Finding the Fourth Proportional to 22,401.71, 30,910.51 and 13,454.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,401.71 : 30,910.51 = 13,454.15 : x
2. Step 2: Convert to fraction form
   22,401.71/30,910.51 = 13,454.15/x
3. Step 3: Cross multiply
   22,401.71x = 30,910.51 × 13,454.15
4. Step 4: Simplify right side
   22,401.71x = 415,874,674.25
5. Step 5: Solve for x
   x = 415,874,674.25/22,401.71
6. Step 6: Final answer
   x = 18,564.41