Finding the Fourth Proportional to 9,194.72, 12,689.46 and 5,216.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,194.72 : 12,689.46 = 5,216.00 : x
2. Step 2: Convert to fraction form
   9,194.72/12,689.46 = 5,216.00/x
3. Step 3: Cross multiply
   9,194.72x = 12,689.46 × 5,216.00
4. Step 4: Simplify right side
   9,194.72x = 66,188,159.91
5. Step 5: Solve for x
   x = 66,188,159.91/9,194.72
6. Step 6: Final answer
   x = 7,198.50