Finding the Fourth Proportional to 22,659.22, 31,274.72 and 12,591.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.22 : 31,274.72 = 12,591.12 : x
2. Step 2: Convert to fraction form
   22,659.22/31,274.72 = 12,591.12/x
3. Step 3: Cross multiply
   22,659.22x = 31,274.72 × 12,591.12
4. Step 4: Simplify right side
   22,659.22x = 393,783,752.49
5. Step 5: Solve for x
   x = 393,783,752.49/22,659.22
6. Step 6: Final answer
   x = 17,378.52