Finding the Fourth Proportional to 13,410.08, 18,505.83 and 7,744.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.08 : 18,505.83 = 7,744.75 : x
2. Step 2: Convert to fraction form
   13,410.08/18,505.83 = 7,744.75/x
3. Step 3: Cross multiply
   13,410.08x = 18,505.83 × 7,744.75
4. Step 4: Simplify right side
   13,410.08x = 143,323,026.89
5. Step 5: Solve for x
   x = 143,323,026.89/13,410.08
6. Step 6: Final answer
   x = 10,687.71