Finding the Fourth Proportional to 11,899.91, 16,384.50 and 10,103.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,899.91 : 16,384.50 = 10,103.69 : x
2. Step 2: Convert to fraction form
   11,899.91/16,384.50 = 10,103.69/x
3. Step 3: Cross multiply
   11,899.91x = 16,384.50 × 10,103.69
4. Step 4: Simplify right side
   11,899.91x = 165,543,826.88
5. Step 5: Solve for x
   x = 165,543,826.88/11,899.91
6. Step 6: Final answer
   x = 13,911.36