Finding the Fourth Proportional to 13,419.96, 18,519.50 and 7,451.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,419.96 : 18,519.50 = 7,451.48 : x
2. Step 2: Convert to fraction form
   13,419.96/18,519.50 = 7,451.48/x
3. Step 3: Cross multiply
   13,419.96x = 18,519.50 × 7,451.48
4. Step 4: Simplify right side
   13,419.96x = 137,997,683.86
5. Step 5: Solve for x
   x = 137,997,683.86/13,419.96
6. Step 6: Final answer
   x = 10,283.02