Finding the Fourth Proportional to 13,410.06, 18,505.82 and 7,744.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.06 : 18,505.82 = 7,744.37 : x
2. Step 2: Convert to fraction form
   13,410.06/18,505.82 = 7,744.37/x
3. Step 3: Cross multiply
   13,410.06x = 18,505.82 × 7,744.37
4. Step 4: Simplify right side
   13,410.06x = 143,315,785.98
5. Step 5: Solve for x
   x = 143,315,785.98/13,410.06
6. Step 6: Final answer
   x = 10,687.18