Finding the Fourth Proportional to 22,736.34, 31,376.12 and 12,665.66

Step by Step Solution

1. Step 1: Write the proportion equation
   22,736.34 : 31,376.12 = 12,665.66 : x
2. Step 2: Convert to fraction form
   22,736.34/31,376.12 = 12,665.66/x
3. Step 3: Cross multiply
   22,736.34x = 31,376.12 × 12,665.66
4. Step 4: Simplify right side
   22,736.34x = 397,399,047.83
5. Step 5: Solve for x
   x = 397,399,047.83/22,736.34
6. Step 6: Final answer
   x = 17,478.58