Finding the Fourth Proportional to 11,158.79, 16,729.98 and 5,319.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,158.79 : 16,729.98 = 5,319.50 : x
2. Step 2: Convert to fraction form
   11,158.79/16,729.98 = 5,319.50/x
3. Step 3: Cross multiply
   11,158.79x = 16,729.98 × 5,319.50
4. Step 4: Simplify right side
   11,158.79x = 88,995,187.53
5. Step 5: Solve for x
   x = 88,995,187.53/11,158.79
6. Step 6: Final answer
   x = 7,975.34