Finding the Fourth Proportional to 23,113.56, 31,896.72 and 12,503.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,113.56 : 31,896.72 = 12,503.21 : x
2. Step 2: Convert to fraction form
   23,113.56/31,896.72 = 12,503.21/x
3. Step 3: Cross multiply
   23,113.56x = 31,896.72 × 12,503.21
4. Step 4: Simplify right side
   23,113.56x = 398,811,228.99
5. Step 5: Solve for x
   x = 398,811,228.99/23,113.56
6. Step 6: Final answer
   x = 17,254.42