Finding the Fourth Proportional to 23,171.94, 31,977.32 and 12,561.62

Step by Step Solution

1. Step 1: Write the proportion equation
   23,171.94 : 31,977.32 = 12,561.62 : x
2. Step 2: Convert to fraction form
   23,171.94/31,977.32 = 12,561.62/x
3. Step 3: Cross multiply
   23,171.94x = 31,977.32 × 12,561.62
4. Step 4: Simplify right side
   23,171.94x = 401,686,719.76
5. Step 5: Solve for x
   x = 401,686,719.76/23,171.94
6. Step 6: Final answer
   x = 17,335.05