Finding the Fourth Proportional to 14,081.69, 19,431.41 and 8,415.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,081.69 : 19,431.41 = 8,415.31 : x
2. Step 2: Convert to fraction form
   14,081.69/19,431.41 = 8,415.31/x
3. Step 3: Cross multiply
   14,081.69x = 19,431.41 × 8,415.31
4. Step 4: Simplify right side
   14,081.69x = 163,521,338.89
5. Step 5: Solve for x
   x = 163,521,338.89/14,081.69
6. Step 6: Final answer
   x = 11,612.34