Finding the Fourth Proportional to 21,421.33, 32,131.18 and 5,626.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,421.33 : 32,131.18 = 5,626.21 : x
2. Step 2: Convert to fraction form
   21,421.33/32,131.18 = 5,626.21/x
3. Step 3: Cross multiply
   21,421.33x = 32,131.18 × 5,626.21
4. Step 4: Simplify right side
   21,421.33x = 180,776,766.23
5. Step 5: Solve for x
   x = 180,776,766.23/21,421.33
6. Step 6: Final answer
   x = 8,439.10