Finding the Fourth Proportional to 10,978.88, 15,157.92 and 9,797.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.88 : 15,157.92 = 9,797.92 : x
2. Step 2: Convert to fraction form
   10,978.88/15,157.92 = 9,797.92/x
3. Step 3: Cross multiply
   10,978.88x = 15,157.92 × 9,797.92
4. Step 4: Simplify right side
   10,978.88x = 148,516,087.53
5. Step 5: Solve for x
   x = 148,516,087.53/10,978.88
6. Step 6: Final answer
   x = 13,527.44