Finding the Fourth Proportional to 18,455.76, 25,470.72 and 10,499.76

Step by Step Solution

1. Step 1: Write the proportion equation
   18,455.76 : 25,470.72 = 10,499.76 : x
2. Step 2: Convert to fraction form
   18,455.76/25,470.72 = 10,499.76/x
3. Step 3: Cross multiply
   18,455.76x = 25,470.72 × 10,499.76
4. Step 4: Simplify right side
   18,455.76x = 267,436,447.03
5. Step 5: Solve for x
   x = 267,436,447.03/18,455.76
6. Step 6: Final answer
   x = 14,490.68