Finding the Fourth Proportional to 10,187.89, 14,059.15 and 5,711.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,187.89 : 14,059.15 = 5,711.63 : x
2. Step 2: Convert to fraction form
   10,187.89/14,059.15 = 5,711.63/x
3. Step 3: Cross multiply
   10,187.89x = 14,059.15 × 5,711.63
4. Step 4: Simplify right side
   10,187.89x = 80,300,662.91
5. Step 5: Solve for x
   x = 80,300,662.91/10,187.89
6. Step 6: Final answer
   x = 7,881.97