Finding the Fourth Proportional to 10,287.09, 14,196.13 and 5,571.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.09 : 14,196.13 = 5,571.34 : x
2. Step 2: Convert to fraction form
   10,287.09/14,196.13 = 5,571.34/x
3. Step 3: Cross multiply
   10,287.09x = 14,196.13 × 5,571.34
4. Step 4: Simplify right side
   10,287.09x = 79,091,417.50
5. Step 5: Solve for x
   x = 79,091,417.50/10,287.09
6. Step 6: Final answer
   x = 7,688.42