Finding the Fourth Proportional to 11,904.32, 16,390.50 and 10,108.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,904.32 : 16,390.50 = 10,108.25 : x
2. Step 2: Convert to fraction form
   11,904.32/16,390.50 = 10,108.25/x
3. Step 3: Cross multiply
   11,904.32x = 16,390.50 × 10,108.25
4. Step 4: Simplify right side
   11,904.32x = 165,679,189.67
5. Step 5: Solve for x
   x = 165,679,189.67/11,904.32
6. Step 6: Final answer
   x = 13,917.57