Finding the Fourth Proportional to 15,550.89, 21,460.53 and 8,477.30

Step by Step Solution

1. Step 1: Write the proportion equation
   15,550.89 : 21,460.53 = 8,477.30 : x
2. Step 2: Convert to fraction form
   15,550.89/21,460.53 = 8,477.30/x
3. Step 3: Cross multiply
   15,550.89x = 21,460.53 × 8,477.30
4. Step 4: Simplify right side
   15,550.89x = 181,927,436.41
5. Step 5: Solve for x
   x = 181,927,436.41/15,550.89
6. Step 6: Final answer
   x = 11,698.85