Finding the Fourth Proportional to 13,170.69, 19,758.47 and 4,411.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,170.69 : 19,758.47 = 4,411.89 : x
2. Step 2: Convert to fraction form
   13,170.69/19,758.47 = 4,411.89/x
3. Step 3: Cross multiply
   13,170.69x = 19,758.47 × 4,411.89
4. Step 4: Simplify right side
   13,170.69x = 87,172,174.15
5. Step 5: Solve for x
   x = 87,172,174.15/13,170.69
6. Step 6: Final answer
   x = 6,618.65