Finding the Fourth Proportional to 9,718.53, 13,411.54 and 5,526.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,718.53 : 13,411.54 = 5,526.78 : x
2. Step 2: Convert to fraction form
   9,718.53/13,411.54 = 5,526.78/x
3. Step 3: Cross multiply
   9,718.53x = 13,411.54 × 5,526.78
4. Step 4: Simplify right side
   9,718.53x = 74,122,631.04
5. Step 5: Solve for x
   x = 74,122,631.04/9,718.53
6. Step 6: Final answer
   x = 7,626.94