Finding the Fourth Proportional to 21,520.10, 32,220.27 and 10,967.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,520.10 : 32,220.27 = 10,967.37 : x
2. Step 2: Convert to fraction form
   21,520.10/32,220.27 = 10,967.37/x
3. Step 3: Cross multiply
   21,520.10x = 32,220.27 × 10,967.37
4. Step 4: Simplify right side
   21,520.10x = 353,371,461.49
5. Step 5: Solve for x
   x = 353,371,461.49/21,520.10
6. Step 6: Final answer
   x = 16,420.53