Finding the Fourth Proportional to 13,710.18, 18,919.98 and 7,422.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,710.18 : 18,919.98 = 7,422.54 : x
2. Step 2: Convert to fraction form
   13,710.18/18,919.98 = 7,422.54/x
3. Step 3: Cross multiply
   13,710.18x = 18,919.98 × 7,422.54
4. Step 4: Simplify right side
   13,710.18x = 140,434,308.35
5. Step 5: Solve for x
   x = 140,434,308.35/13,710.18
6. Step 6: Final answer
   x = 10,243.07