Finding the Fourth Proportional to 16,589.31, 22,915.64 and 13,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,589.31 : 22,915.64 = 13,255.50 : x
2. Step 2: Convert to fraction form
   16,589.31/22,915.64 = 13,255.50/x
3. Step 3: Cross multiply
   16,589.31x = 22,915.64 × 13,255.50
4. Step 4: Simplify right side
   16,589.31x = 303,758,266.02
5. Step 5: Solve for x
   x = 303,758,266.02/16,589.31
6. Step 6: Final answer
   x = 18,310.48