Finding the Fourth Proportional to 13,142.71, 19,696.78 and 5,347.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,142.71 : 19,696.78 = 5,347.27 : x
2. Step 2: Convert to fraction form
   13,142.71/19,696.78 = 5,347.27/x
3. Step 3: Cross multiply
   13,142.71x = 19,696.78 × 5,347.27
4. Step 4: Simplify right side
   13,142.71x = 105,324,000.79
5. Step 5: Solve for x
   x = 105,324,000.79/13,142.71
6. Step 6: Final answer
   x = 8,013.87