Finding the Fourth Proportional to 15,055.06, 20,776.71 and 9,086.62

Step by Step Solution

1. Step 1: Write the proportion equation
   15,055.06 : 20,776.71 = 9,086.62 : x
2. Step 2: Convert to fraction form
   15,055.06/20,776.71 = 9,086.62/x
3. Step 3: Cross multiply
   15,055.06x = 20,776.71 × 9,086.62
4. Step 4: Simplify right side
   15,055.06x = 188,790,068.62
5. Step 5: Solve for x
   x = 188,790,068.62/15,055.06
6. Step 6: Final answer
   x = 12,539.97