Finding the Fourth Proportional to 16,773.55, 23,121.12 and 13,591.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,773.55 : 23,121.12 = 13,591.60 : x
2. Step 2: Convert to fraction form
   16,773.55/23,121.12 = 13,591.60/x
3. Step 3: Cross multiply
   16,773.55x = 23,121.12 × 13,591.60
4. Step 4: Simplify right side
   16,773.55x = 314,253,014.59
5. Step 5: Solve for x
   x = 314,253,014.59/16,773.55
6. Step 6: Final answer
   x = 18,735.03