Finding the Fourth Proportional to 13,086.23, 19,540.71 and 10,281.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.23 : 19,540.71 = 10,281.40 : x
2. Step 2: Convert to fraction form
   13,086.23/19,540.71 = 10,281.40/x
3. Step 3: Cross multiply
   13,086.23x = 19,540.71 × 10,281.40
4. Step 4: Simplify right side
   13,086.23x = 200,905,806.94
5. Step 5: Solve for x
   x = 200,905,806.94/13,086.23
6. Step 6: Final answer
   x = 15,352.46