Finding the Fourth Proportional to 23,561.34, 35,342.04 and 7,977.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,561.34 : 35,342.04 = 7,977.78 : x
2. Step 2: Convert to fraction form
   23,561.34/35,342.04 = 7,977.78/x
3. Step 3: Cross multiply
   23,561.34x = 35,342.04 × 7,977.78
4. Step 4: Simplify right side
   23,561.34x = 281,951,019.87
5. Step 5: Solve for x
   x = 281,951,019.87/23,561.34
6. Step 6: Final answer
   x = 11,966.68