Finding the Fourth Proportional to 13,404.70, 18,499.61 and 7,436.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.70 : 18,499.61 = 7,436.26 : x
2. Step 2: Convert to fraction form
   13,404.70/18,499.61 = 7,436.26/x
3. Step 3: Cross multiply
   13,404.70x = 18,499.61 × 7,436.26
4. Step 4: Simplify right side
   13,404.70x = 137,567,909.74
5. Step 5: Solve for x
   x = 137,567,909.74/13,404.70
6. Step 6: Final answer
   x = 10,262.67