Finding the Fourth Proportional to 11,559.71, 15,968.72 and 9,198.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,559.71 : 15,968.72 = 9,198.83 : x
2. Step 2: Convert to fraction form
   11,559.71/15,968.72 = 9,198.83/x
3. Step 3: Cross multiply
   11,559.71x = 15,968.72 × 9,198.83
4. Step 4: Simplify right side
   11,559.71x = 146,893,483.75
5. Step 5: Solve for x
   x = 146,893,483.75/11,559.71
6. Step 6: Final answer
   x = 12,707.37