Finding the Fourth Proportional to 15,558.41, 21,471.89 and 8,846.15

Step by Step Solution

1. Step 1: Write the proportion equation
   15,558.41 : 21,471.89 = 8,846.15 : x
2. Step 2: Convert to fraction form
   15,558.41/21,471.89 = 8,846.15/x
3. Step 3: Cross multiply
   15,558.41x = 21,471.89 × 8,846.15
4. Step 4: Simplify right side
   15,558.41x = 189,943,559.72
5. Step 5: Solve for x
   x = 189,943,559.72/15,558.41
6. Step 6: Final answer
   x = 12,208.42