Finding the Fourth Proportional to 8,724.86, 13,087.59 and 3,460.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,724.86 : 13,087.59 = 3,460.87 : x
2. Step 2: Convert to fraction form
   8,724.86/13,087.59 = 3,460.87/x
3. Step 3: Cross multiply
   8,724.86x = 13,087.59 × 3,460.87
4. Step 4: Simplify right side
   8,724.86x = 45,294,447.60
5. Step 5: Solve for x
   x = 45,294,447.60/8,724.86
6. Step 6: Final answer
   x = 5,191.42