Finding the Fourth Proportional to 22,927.04, 31,640.83 and 12,856.13

Step by Step Solution

1. Step 1: Write the proportion equation
   22,927.04 : 31,640.83 = 12,856.13 : x
2. Step 2: Convert to fraction form
   22,927.04/31,640.83 = 12,856.13/x
3. Step 3: Cross multiply
   22,927.04x = 31,640.83 × 12,856.13
4. Step 4: Simplify right side
   22,927.04x = 406,778,401.30
5. Step 5: Solve for x
   x = 406,778,401.30/22,927.04
6. Step 6: Final answer
   x = 17,742.30