Finding the Fourth Proportional to 8,711.98, 13,077.18 and 5,427.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,711.98 : 13,077.18 = 5,427.34 : x
2. Step 2: Convert to fraction form
   8,711.98/13,077.18 = 5,427.34/x
3. Step 3: Cross multiply
   8,711.98x = 13,077.18 × 5,427.34
4. Step 4: Simplify right side
   8,711.98x = 70,974,269.41
5. Step 5: Solve for x
   x = 70,974,269.41/8,711.98
6. Step 6: Final answer
   x = 8,146.75