Finding the Fourth Proportional to 18,647.76, 25,734.72 and 10,690.74

Step by Step Solution

1. Step 1: Write the proportion equation
   18,647.76 : 25,734.72 = 10,690.74 : x
2. Step 2: Convert to fraction form
   18,647.76/25,734.72 = 10,690.74/x
3. Step 3: Cross multiply
   18,647.76x = 25,734.72 × 10,690.74
4. Step 4: Simplify right side
   18,647.76x = 275,123,200.49
5. Step 5: Solve for x
   x = 275,123,200.49/18,647.76
6. Step 6: Final answer
   x = 14,753.69