Finding the Fourth Proportional to 13,910.72, 20,866.12 and 3,522.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,910.72 : 20,866.12 = 3,522.46 : x
2. Step 2: Convert to fraction form
   13,910.72/20,866.12 = 3,522.46/x
3. Step 3: Cross multiply
   13,910.72x = 20,866.12 × 3,522.46
4. Step 4: Simplify right side
   13,910.72x = 73,500,073.06
5. Step 5: Solve for x
   x = 73,500,073.06/13,910.72
6. Step 6: Final answer
   x = 5,283.70