Finding the Fourth Proportional to 10,187.67, 14,059.56 and 5,712.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,187.67 : 14,059.56 = 5,712.86 : x
2. Step 2: Convert to fraction form
   10,187.67/14,059.56 = 5,712.86/x
3. Step 3: Cross multiply
   10,187.67x = 14,059.56 × 5,712.86
4. Step 4: Simplify right side
   10,187.67x = 80,320,227.64
5. Step 5: Solve for x
   x = 80,320,227.64/10,187.67
6. Step 6: Final answer
   x = 7,884.06