Finding the Fourth Proportional to 22,654.91, 31,263.12 and 12,964.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,654.91 : 31,263.12 = 12,964.61 : x
2. Step 2: Convert to fraction form
   22,654.91/31,263.12 = 12,964.61/x
3. Step 3: Cross multiply
   22,654.91x = 31,263.12 × 12,964.61
4. Step 4: Simplify right side
   22,654.91x = 405,314,001.87
5. Step 5: Solve for x
   x = 405,314,001.87/22,654.91
6. Step 6: Final answer
   x = 17,890.78