Finding the Fourth Proportional to 22,188.16, 30,618.24 and 12,757.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,188.16 : 30,618.24 = 12,757.12 : x
2. Step 2: Convert to fraction form
   22,188.16/30,618.24 = 12,757.12/x
3. Step 3: Cross multiply
   22,188.16x = 30,618.24 × 12,757.12
4. Step 4: Simplify right side
   22,188.16x = 390,600,561.87
5. Step 5: Solve for x
   x = 390,600,561.87/22,188.16
6. Step 6: Final answer
   x = 17,604.01