Finding the Fourth Proportional to 13,451.71, 18,562.54 and 7,786.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,451.71 : 18,562.54 = 7,786.05 : x
2. Step 2: Convert to fraction form
   13,451.71/18,562.54 = 7,786.05/x
3. Step 3: Cross multiply
   13,451.71x = 18,562.54 × 7,786.05
4. Step 4: Simplify right side
   13,451.71x = 144,528,732.82
5. Step 5: Solve for x
   x = 144,528,732.82/13,451.71
6. Step 6: Final answer
   x = 10,744.26