Finding the Fourth Proportional to 13,131.94, 19,706.11 and 5,340.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.94 : 19,706.11 = 5,340.75 : x
2. Step 2: Convert to fraction form
   13,131.94/19,706.11 = 5,340.75/x
3. Step 3: Cross multiply
   13,131.94x = 19,706.11 × 5,340.75
4. Step 4: Simplify right side
   13,131.94x = 105,245,406.98
5. Step 5: Solve for x
   x = 105,245,406.98/13,131.94
6. Step 6: Final answer
   x = 8,014.46