Finding the Fourth Proportional to 13,404.41, 18,500.31 and 7,438.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.41 : 18,500.31 = 7,438.01 : x
2. Step 2: Convert to fraction form
   13,404.41/18,500.31 = 7,438.01/x
3. Step 3: Cross multiply
   13,404.41x = 18,500.31 × 7,438.01
4. Step 4: Simplify right side
   13,404.41x = 137,605,398.28
5. Step 5: Solve for x
   x = 137,605,398.28/13,404.41
6. Step 6: Final answer
   x = 10,265.68