Finding the Fourth Proportional to 10,977.88, 15,156.54 and 9,796.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,977.88 : 15,156.54 = 9,796.92 : x
2. Step 2: Convert to fraction form
   10,977.88/15,156.54 = 9,796.92/x
3. Step 3: Cross multiply
   10,977.88x = 15,156.54 × 9,796.92
4. Step 4: Simplify right side
   10,977.88x = 148,487,409.86
5. Step 5: Solve for x
   x = 148,487,409.86/10,977.88
6. Step 6: Final answer
   x = 13,526.06