Finding the Fourth Proportional to 23,140, 31,937.52 and 13,204

Step by Step Solution

1. Step 1: Write the proportion equation
   23,140 : 31,937.52 = 13,204 : x
2. Step 2: Convert to fraction form
   23,140/31,937.52 = 13,204/x
3. Step 3: Cross multiply
   23,140x = 31,937.52 × 13,204
4. Step 4: Simplify right side
   23,140x = 421,703,014.08
5. Step 5: Solve for x
   x = 421,703,014.08/23,140
6. Step 6: Final answer
   x = 18,223.99