Finding the Fourth Proportional to 13,400.13, 18,493.31 and 7,433.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,400.13 : 18,493.31 = 7,433.72 : x
2. Step 2: Convert to fraction form
   13,400.13/18,493.31 = 7,433.72/x
3. Step 3: Cross multiply
   13,400.13x = 18,493.31 × 7,433.72
4. Step 4: Simplify right side
   13,400.13x = 137,474,083.88
5. Step 5: Solve for x
   x = 137,474,083.88/13,400.13
6. Step 6: Final answer
   x = 10,259.16