Finding the Fourth Proportional to 10,899.91, 16,350.02 and 3,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.91 : 16,350.02 = 3,108.72 : x
2. Step 2: Convert to fraction form
   10,899.91/16,350.02 = 3,108.72/x
3. Step 3: Cross multiply
   10,899.91x = 16,350.02 × 3,108.72
4. Step 4: Simplify right side
   10,899.91x = 50,827,634.17
5. Step 5: Solve for x
   x = 50,827,634.17/10,899.91
6. Step 6: Final answer
   x = 4,663.12