Finding the Fourth Proportional to 11,910.23, 16,398.69 and 10,113.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,910.23 : 16,398.69 = 10,113.94 : x
2. Step 2: Convert to fraction form
   11,910.23/16,398.69 = 10,113.94/x
3. Step 3: Cross multiply
   11,910.23x = 16,398.69 × 10,113.94
4. Step 4: Simplify right side
   11,910.23x = 165,855,366.74
5. Step 5: Solve for x
   x = 165,855,366.74/11,910.23
6. Step 6: Final answer
   x = 13,925.45