Finding the Fourth Proportional to 21,630.21, 32,432.76 and 10,522.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,630.21 : 32,432.76 = 10,522.89 : x
2. Step 2: Convert to fraction form
   21,630.21/32,432.76 = 10,522.89/x
3. Step 3: Cross multiply
   21,630.21x = 32,432.76 × 10,522.89
4. Step 4: Simplify right side
   21,630.21x = 341,286,365.88
5. Step 5: Solve for x
   x = 341,286,365.88/21,630.21
6. Step 6: Final answer
   x = 15,778.23