Finding the Fourth Proportional to 9,216.95, 12,715.79 and 5,674.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,216.95 : 12,715.79 = 5,674.01 : x
2. Step 2: Convert to fraction form
   9,216.95/12,715.79 = 5,674.01/x
3. Step 3: Cross multiply
   9,216.95x = 12,715.79 × 5,674.01
4. Step 4: Simplify right side
   9,216.95x = 72,149,491.25
5. Step 5: Solve for x
   x = 72,149,491.25/9,216.95
6. Step 6: Final answer
   x = 7,827.91