Finding the Fourth Proportional to 13,710.12, 18,919.98 and 7,422.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,710.12 : 18,919.98 = 7,422.48 : x
2. Step 2: Convert to fraction form
   13,710.12/18,919.98 = 7,422.48/x
3. Step 3: Cross multiply
   13,710.12x = 18,919.98 × 7,422.48
4. Step 4: Simplify right side
   13,710.12x = 140,433,173.15
5. Step 5: Solve for x
   x = 140,433,173.15/13,710.12
6. Step 6: Final answer
   x = 10,243.03