Finding the Fourth Proportional to 22,179.57, 30,606.50 and 12,748.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,179.57 : 30,606.50 = 12,748.14 : x
2. Step 2: Convert to fraction form
   22,179.57/30,606.50 = 12,748.14/x
3. Step 3: Cross multiply
   22,179.57x = 30,606.50 × 12,748.14
4. Step 4: Simplify right side
   22,179.57x = 390,175,883.17
5. Step 5: Solve for x
   x = 390,175,883.17/22,179.57
6. Step 6: Final answer
   x = 17,591.68