Finding the Fourth Proportional to 22,179.56, 30,610.50 and 12,748.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,179.56 : 30,610.50 = 12,748.12 : x
2. Step 2: Convert to fraction form
   22,179.56/30,610.50 = 12,748.12/x
3. Step 3: Cross multiply
   22,179.56x = 30,610.50 × 12,748.12
4. Step 4: Simplify right side
   22,179.56x = 390,226,327.26
5. Step 5: Solve for x
   x = 390,226,327.26/22,179.56
6. Step 6: Final answer
   x = 17,593.96