Finding the Fourth Proportional to 11,904.41, 16,390.69 and 10,108.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,904.41 : 16,390.69 = 10,108.15 : x
2. Step 2: Convert to fraction form
   11,904.41/16,390.69 = 10,108.15/x
3. Step 3: Cross multiply
   11,904.41x = 16,390.69 × 10,108.15
4. Step 4: Simplify right side
   11,904.41x = 165,679,486.88
5. Step 5: Solve for x
   x = 165,679,486.88/11,904.41
6. Step 6: Final answer
   x = 13,917.49