Finding the Fourth Proportional to 11,866.69, 17,795.78 and 3,545.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,866.69 : 17,795.78 = 3,545.15 : x
2. Step 2: Convert to fraction form
   11,866.69/17,795.78 = 3,545.15/x
3. Step 3: Cross multiply
   11,866.69x = 17,795.78 × 3,545.15
4. Step 4: Simplify right side
   11,866.69x = 63,088,706.19
5. Step 5: Solve for x
   x = 63,088,706.19/11,866.69
6. Step 6: Final answer
   x = 5,316.46