Finding the Fourth Proportional to 10,418.72, 14,378.20 and 5,703

Step by Step Solution

1. Step 1: Write the proportion equation
   10,418.72 : 14,378.20 = 5,703 : x
2. Step 2: Convert to fraction form
   10,418.72/14,378.20 = 5,703/x
3. Step 3: Cross multiply
   10,418.72x = 14,378.20 × 5,703
4. Step 4: Simplify right side
   10,418.72x = 81,998,874.60
5. Step 5: Solve for x
   x = 81,998,874.60/10,418.72
6. Step 6: Final answer
   x = 7,870.34