Finding the Fourth Proportional to 22,196.34, 30,631.84 and 12,764.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,196.34 : 30,631.84 = 12,764.90 : x
2. Step 2: Convert to fraction form
   22,196.34/30,631.84 = 12,764.90/x
3. Step 3: Cross multiply
   22,196.34x = 30,631.84 × 12,764.90
4. Step 4: Simplify right side
   22,196.34x = 391,012,374.42
5. Step 5: Solve for x
   x = 391,012,374.42/22,196.34
6. Step 6: Final answer
   x = 17,616.07