Finding the Fourth Proportional to 9,718.94, 13,411.32 and 5,469.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,718.94 : 13,411.32 = 5,469.78 : x
2. Step 2: Convert to fraction form
   9,718.94/13,411.32 = 5,469.78/x
3. Step 3: Cross multiply
   9,718.94x = 13,411.32 × 5,469.78
4. Step 4: Simplify right side
   9,718.94x = 73,356,955.02
5. Step 5: Solve for x
   x = 73,356,955.02/9,718.94
6. Step 6: Final answer
   x = 7,547.84