Finding the Fourth Proportional to 10,287.07, 14,196.18 and 5,571.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.07 : 14,196.18 = 5,571.35 : x
2. Step 2: Convert to fraction form
   10,287.07/14,196.18 = 5,571.35/x
3. Step 3: Cross multiply
   10,287.07x = 14,196.18 × 5,571.35
4. Step 4: Simplify right side
   10,287.07x = 79,091,887.44
5. Step 5: Solve for x
   x = 79,091,887.44/10,287.07
6. Step 6: Final answer
   x = 7,688.48