Finding the Fourth Proportional to 13,333.62, 18,400.59 and 7,744.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,333.62 : 18,400.59 = 7,744.62 : x
2. Step 2: Convert to fraction form
   13,333.62/18,400.59 = 7,744.62/x
3. Step 3: Cross multiply
   13,333.62x = 18,400.59 × 7,744.62
4. Step 4: Simplify right side
   13,333.62x = 142,505,577.33
5. Step 5: Solve for x
   x = 142,505,577.33/13,333.62
6. Step 6: Final answer
   x = 10,687.69