Finding the Fourth Proportional to 14,401.69, 19,875.58 and 8,115.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,401.69 : 19,875.58 = 8,115.28 : x
2. Step 2: Convert to fraction form
   14,401.69/19,875.58 = 8,115.28/x
3. Step 3: Cross multiply
   14,401.69x = 19,875.58 × 8,115.28
4. Step 4: Simplify right side
   14,401.69x = 161,295,826.89
5. Step 5: Solve for x
   x = 161,295,826.89/14,401.69
6. Step 6: Final answer
   x = 11,199.79