Finding the Fourth Proportional to 9,086.50, 12,539.64 and 5,360.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.50 : 12,539.64 = 5,360.50 : x
2. Step 2: Convert to fraction form
   9,086.50/12,539.64 = 5,360.50/x
3. Step 3: Cross multiply
   9,086.50x = 12,539.64 × 5,360.50
4. Step 4: Simplify right side
   9,086.50x = 67,218,740.22
5. Step 5: Solve for x
   x = 67,218,740.22/9,086.50
6. Step 6: Final answer
   x = 7,397.65