Finding the Fourth Proportional to 22,665.60, 31,279.59 and 12,594.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,665.60 : 31,279.59 = 12,594.06 : x
2. Step 2: Convert to fraction form
   22,665.60/31,279.59 = 12,594.06/x
3. Step 3: Cross multiply
   22,665.60x = 31,279.59 × 12,594.06
4. Step 4: Simplify right side
   22,665.60x = 393,937,033.24
5. Step 5: Solve for x
   x = 393,937,033.24/22,665.60
6. Step 6: Final answer
   x = 17,380.39