Finding the Fourth Proportional to 11,563.50, 15,959.52 and 7,089.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,563.50 : 15,959.52 = 7,089.72 : x
2. Step 2: Convert to fraction form
   11,563.50/15,959.52 = 7,089.72/x
3. Step 3: Cross multiply
   11,563.50x = 15,959.52 × 7,089.72
4. Step 4: Simplify right side
   11,563.50x = 113,148,528.13
5. Step 5: Solve for x
   x = 113,148,528.13/11,563.50
6. Step 6: Final answer
   x = 9,784.97