Finding the Fourth Proportional to 16,740.57, 25,113.96 and 13,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,740.57 : 25,113.96 = 13,647.72 : x
2. Step 2: Convert to fraction form
   16,740.57/25,113.96 = 13,647.72/x
3. Step 3: Cross multiply
   16,740.57x = 25,113.96 × 13,647.72
4. Step 4: Simplify right side
   16,740.57x = 342,748,294.17
5. Step 5: Solve for x
   x = 342,748,294.17/16,740.57
6. Step 6: Final answer
   x = 20,474.11