Finding the Fourth Proportional to 8,619.86, 11,900.32 and 5,792.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619.86 : 11,900.32 = 5,792.30 : x
2. Step 2: Convert to fraction form
   8,619.86/11,900.32 = 5,792.30/x
3. Step 3: Cross multiply
   8,619.86x = 11,900.32 × 5,792.30
4. Step 4: Simplify right side
   8,619.86x = 68,930,223.54
5. Step 5: Solve for x
   x = 68,930,223.54/8,619.86
6. Step 6: Final answer
   x = 7,996.68