Finding the Fourth Proportional to 13,710.15, 18,920.03 and 7,422.53

Step by Step Solution

1. Step 1: Write the proportion equation
   13,710.15 : 18,920.03 = 7,422.53 : x
2. Step 2: Convert to fraction form
   13,710.15/18,920.03 = 7,422.53/x
3. Step 3: Cross multiply
   13,710.15x = 18,920.03 × 7,422.53
4. Step 4: Simplify right side
   13,710.15x = 140,434,358.56
5. Step 5: Solve for x
   x = 140,434,358.56/13,710.15
6. Step 6: Final answer
   x = 10,243.09