Finding the Fourth Proportional to 13,187.43, 19,777.23 and 7,182.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,187.43 : 19,777.23 = 7,182.59 : x
2. Step 2: Convert to fraction form
   13,187.43/19,777.23 = 7,182.59/x
3. Step 3: Cross multiply
   13,187.43x = 19,777.23 × 7,182.59
4. Step 4: Simplify right side
   13,187.43x = 142,051,635.54
5. Step 5: Solve for x
   x = 142,051,635.54/13,187.43
6. Step 6: Final answer
   x = 10,771.75