Finding the Fourth Proportional to 22,892.96, 31,590.16 and 12,956.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,892.96 : 31,590.16 = 12,956.96 : x
2. Step 2: Convert to fraction form
   22,892.96/31,590.16 = 12,956.96/x
3. Step 3: Cross multiply
   22,892.96x = 31,590.16 × 12,956.96
4. Step 4: Simplify right side
   22,892.96x = 409,312,439.51
5. Step 5: Solve for x
   x = 409,312,439.51/22,892.96
6. Step 6: Final answer
   x = 17,879.40