Finding the Fourth Proportional to 13,371.87, 18,454.55 and 7,706.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,371.87 : 18,454.55 = 7,706.82 : x
2. Step 2: Convert to fraction form
   13,371.87/18,454.55 = 7,706.82/x
3. Step 3: Cross multiply
   13,371.87x = 18,454.55 × 7,706.82
4. Step 4: Simplify right side
   13,371.87x = 142,225,856.50
5. Step 5: Solve for x
   x = 142,225,856.50/13,371.87
6. Step 6: Final answer
   x = 10,636.20