Finding the Fourth Proportional to 18,766.58, 28,141.56 and 5,616.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,766.58 : 28,141.56 = 5,616.50 : x
2. Step 2: Convert to fraction form
   18,766.58/28,141.56 = 5,616.50/x
3. Step 3: Cross multiply
   18,766.58x = 28,141.56 × 5,616.50
4. Step 4: Simplify right side
   18,766.58x = 158,056,931.03
5. Step 5: Solve for x
   x = 158,056,931.03/18,766.58
6. Step 6: Final answer
   x = 8,422.26