Finding the Fourth Proportional to 8,723.89, 12,039.29 and 4,998.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,723.89 : 12,039.29 = 4,998.61 : x
2. Step 2: Convert to fraction form
   8,723.89/12,039.29 = 4,998.61/x
3. Step 3: Cross multiply
   8,723.89x = 12,039.29 × 4,998.61
4. Step 4: Simplify right side
   8,723.89x = 60,179,715.39
5. Step 5: Solve for x
   x = 60,179,715.39/8,723.89
6. Step 6: Final answer
   x = 6,898.27