Finding the Fourth Proportional to 10,187.02, 14,058.78 and 5,711.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,187.02 : 14,058.78 = 5,711.08 : x
2. Step 2: Convert to fraction form
   10,187.02/14,058.78 = 5,711.08/x
3. Step 3: Cross multiply
   10,187.02x = 14,058.78 × 5,711.08
4. Step 4: Simplify right side
   10,187.02x = 80,290,817.28
5. Step 5: Solve for x
   x = 80,290,817.28/10,187.02
6. Step 6: Final answer
   x = 7,881.68