Finding the Fourth Proportional to 10,836.84, 16,250.88 and 5,288.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,836.84 : 16,250.88 = 5,288.55 : x
2. Step 2: Convert to fraction form
   10,836.84/16,250.88 = 5,288.55/x
3. Step 3: Cross multiply
   10,836.84x = 16,250.88 × 5,288.55
4. Step 4: Simplify right side
   10,836.84x = 85,943,591.42
5. Step 5: Solve for x
   x = 85,943,591.42/10,836.84
6. Step 6: Final answer
   x = 7,930.69