Finding the Fourth Proportional to 13,131.95, 19,706.12 and 5,340.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.95 : 19,706.12 = 5,340.75 : x
2. Step 2: Convert to fraction form
   13,131.95/19,706.12 = 5,340.75/x
3. Step 3: Cross multiply
   13,131.95x = 19,706.12 × 5,340.75
4. Step 4: Simplify right side
   13,131.95x = 105,245,433.69
5. Step 5: Solve for x
   x = 105,245,433.69/13,131.95
6. Step 6: Final answer
   x = 8,014.46