Finding the Fourth Proportional to 11,421.81, 17,130.51 and 3,522.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,421.81 : 17,130.51 = 3,522.24 : x
2. Step 2: Convert to fraction form
   11,421.81/17,130.51 = 3,522.24/x
3. Step 3: Cross multiply
   11,421.81x = 17,130.51 × 3,522.24
4. Step 4: Simplify right side
   11,421.81x = 60,337,767.54
5. Step 5: Solve for x
   x = 60,337,767.54/11,421.81
6. Step 6: Final answer
   x = 5,282.68