Finding the Fourth Proportional to 10,754.20, 16,109.71 and 5,488.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,754.20 : 16,109.71 = 5,488.99 : x
2. Step 2: Convert to fraction form
   10,754.20/16,109.71 = 5,488.99/x
3. Step 3: Cross multiply
   10,754.20x = 16,109.71 × 5,488.99
4. Step 4: Simplify right side
   10,754.20x = 88,426,037.09
5. Step 5: Solve for x
   x = 88,426,037.09/10,754.20
6. Step 6: Final answer
   x = 8,222.47