Finding the Fourth Proportional to 11,084.95, 16,618.07 and 5,158.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,084.95 : 16,618.07 = 5,158.78 : x
2. Step 2: Convert to fraction form
   11,084.95/16,618.07 = 5,158.78/x
3. Step 3: Cross multiply
   11,084.95x = 16,618.07 × 5,158.78
4. Step 4: Simplify right side
   11,084.95x = 85,728,982.91
5. Step 5: Solve for x
   x = 85,728,982.91/11,084.95
6. Step 6: Final answer
   x = 7,733.82