Finding the Fourth Proportional to 21,421.72, 32,131.63 and 5,839.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,421.72 : 32,131.63 = 5,839.35 : x
2. Step 2: Convert to fraction form
   21,421.72/32,131.63 = 5,839.35/x
3. Step 3: Cross multiply
   21,421.72x = 32,131.63 × 5,839.35
4. Step 4: Simplify right side
   21,421.72x = 187,627,833.64
5. Step 5: Solve for x
   x = 187,627,833.64/21,421.72
6. Step 6: Final answer
   x = 8,758.77