Finding the Fourth Proportional to 22,196.08, 30,631.50 and 12,764.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,196.08 : 30,631.50 = 12,764.64 : x
2. Step 2: Convert to fraction form
   22,196.08/30,631.50 = 12,764.64/x
3. Step 3: Cross multiply
   22,196.08x = 30,631.50 × 12,764.64
4. Step 4: Simplify right side
   22,196.08x = 391,000,146.74
5. Step 5: Solve for x
   x = 391,000,146.74/22,196.08
6. Step 6: Final answer
   x = 17,615.73