Finding the Fourth Proportional to 5,071.27, 6,991.98 and 3,877.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,071.27 : 6,991.98 = 3,877.72 : x
2. Step 2: Convert to fraction form
   5,071.27/6,991.98 = 3,877.72/x
3. Step 3: Cross multiply
   5,071.27x = 6,991.98 × 3,877.72
4. Step 4: Simplify right side
   5,071.27x = 27,112,940.69
5. Step 5: Solve for x
   x = 27,112,940.69/5,071.27
6. Step 6: Final answer
   x = 5,346.38