Finding the Fourth Proportional to 21,598.16, 32,401.62 and 8,270.20

Step by Step Solution

1. Step 1: Write the proportion equation
   21,598.16 : 32,401.62 = 8,270.20 : x
2. Step 2: Convert to fraction form
   21,598.16/32,401.62 = 8,270.20/x
3. Step 3: Cross multiply
   21,598.16x = 32,401.62 × 8,270.20
4. Step 4: Simplify right side
   21,598.16x = 267,967,877.72
5. Step 5: Solve for x
   x = 267,967,877.72/21,598.16
6. Step 6: Final answer
   x = 12,406.98