Finding the Fourth Proportional to 22,196.56, 30,631.32 and 12,764.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,196.56 : 30,631.32 = 12,764.50 : x
2. Step 2: Convert to fraction form
   22,196.56/30,631.32 = 12,764.50/x
3. Step 3: Cross multiply
   22,196.56x = 30,631.32 × 12,764.50
4. Step 4: Simplify right side
   22,196.56x = 390,993,484.14
5. Step 5: Solve for x
   x = 390,993,484.14/22,196.56
6. Step 6: Final answer
   x = 17,615.05