Finding the Fourth Proportional to 8,706.18, 13,061.16 and 2,862.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,706.18 : 13,061.16 = 2,862.57 : x
2. Step 2: Convert to fraction form
   8,706.18/13,061.16 = 2,862.57/x
3. Step 3: Cross multiply
   8,706.18x = 13,061.16 × 2,862.57
4. Step 4: Simplify right side
   8,706.18x = 37,388,484.78
5. Step 5: Solve for x
   x = 37,388,484.78/8,706.18
6. Step 6: Final answer
   x = 4,294.48