Finding the Fourth Proportional to 23,011.21, 31,756.59 and 12,942.82

Step by Step Solution

1. Step 1: Write the proportion equation
   23,011.21 : 31,756.59 = 12,942.82 : x
2. Step 2: Convert to fraction form
   23,011.21/31,756.59 = 12,942.82/x
3. Step 3: Cross multiply
   23,011.21x = 31,756.59 × 12,942.82
4. Step 4: Simplify right side
   23,011.21x = 411,019,828.18
5. Step 5: Solve for x
   x = 411,019,828.18/23,011.21
6. Step 6: Final answer
   x = 17,861.72