Finding the Fourth Proportional to 23,145.48, 31,940.82 and 12,535.11

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.48 : 31,940.82 = 12,535.11 : x
2. Step 2: Convert to fraction form
   23,145.48/31,940.82 = 12,535.11/x
3. Step 3: Cross multiply
   23,145.48x = 31,940.82 × 12,535.11
4. Step 4: Simplify right side
   23,145.48x = 400,381,692.19
5. Step 5: Solve for x
   x = 400,381,692.19/23,145.48
6. Step 6: Final answer
   x = 17,298.48